diff --git a/src/pkg/valency/valency/Frame.py b/src/pkg/valency/valency/Frame.py
index dc1148e..89b7116 100644
--- a/src/pkg/valency/valency/Frame.py
+++ b/src/pkg/valency/valency/Frame.py
@@ -37,7 +37,8 @@ def frames_from_db_entry(dbent):
     return frames
 
 class Frame():
-    def __init__(self, tids, deep_links=None, slots=None, hw_lemma=None, sentences=None):
+    def __init__(self, tids, deep_links=None, slots=None, 
+        hw_lemma=None, sentences=None, sentence_count=None):
         self.hw = hw_lemma
         self.tids = tids   # list of tokens with the same hw_lemma
         # Each tid = "S123.t123";
@@ -50,6 +51,8 @@ class Frame():
         self.sense_info = {}
         self.sentences = sentences
         self.aggr_sent = None  # Dictionary { hw: self.sentences idx }
+        self.sentence_count = sentence_count  # paging, optimization
+
 
     def get_functors(self):
         return [slot.functor for slot in self.slots]
@@ -62,7 +65,8 @@ class Frame():
             "slots": [slot.to_json() for slot in self.slots],
             "sentences": self.sentences,
             "aggr_sent": self.aggr_sent,
-            "sense_info": self.sense_info
+            "sense_info": self.sense_info,
+            "sentence_count": self.sentence_count
         }
         return ret
 
diff --git a/src/pkg/valency/valency/frame.py b/src/pkg/valency/valency/frame.py
deleted file mode 100644
index ea7c0c5..0000000
--- a/src/pkg/valency/valency/frame.py
+++ /dev/null
@@ -1,96 +0,0 @@
-import logging
-
-log = logging.getLogger(__name__)
-
-
-class Frame():
-    def __init__(self, tids, deep_links=None, slots=None, hw=None):
-        self.hw = hw
-        self.tids = tids   # list of tokens with the same hw_lemma
-        # Each tid = "S123.t123";
-        # you can get sentence with vallex.get_sentence(S123)
-        self.slots = []
-        if slots is None:
-            self.slots = self.init_slots(deep_links)
-        else:
-            self.slots = slots
-        self.sense_info = {}
-        self.sentences = None  # Used for passing to view in app.py, get_frames
-        self.aggr_sent = None  # Dictionary { hw: self.sentences idx }
-
-    def to_json(self):
-        ret = {
-            "hw": self.hw,
-            "tids": self.tids,
-            "slots": [slot.to_json() for slot in self.slots],
-            "sentences": self.sentences,
-            "aggr_sent": self.aggr_sent,
-            "sense_info": self.sense_info
-        }
-        return ret
-
-    def init_slots(self, deep):
-        slots = []
-        for link in deep:
-            slots.append(Slot(
-                functor=link["functor"],
-                tids=[link["to"]]
-            ))
-        return slots
-
-    def sort_slots(self):
-        # ACT, PAT, alphabetically
-        srt1 = [
-            x for x in self.slots
-            if (x.functor == "ACT" or
-                x.functor == "PAT")
-        ]
-        srt1 = sorted(srt1, key=lambda x: x.functor)
-        srt2 = [
-            x for x in self.slots
-            if (x.functor != "ACT" and
-                x.functor != "PAT")
-        ]
-        srt2 = sorted(srt2, key=lambda x: x.functor)
-        self.slots = (srt1 + srt2)
-
-    def to_string(self):
-        ret = "Frame:\n"
-        ret += "sense_info: {}\n".format(str(self.sense_info))
-        ret += "tids: ["
-        for t in self.tids:
-            ret += (str(t) + ", ")
-        ret += "]\n"
-        if self.slots is not None:
-            ret += "slots:\n"
-            for sl in self.slots:
-                ret += (sl.to_string() + "\n")
-        return ret
-
-
-class Slot():
-    # Each slot is identified by its functor (ACT, PAT, ...)
-    # It consists of different tokens.
-    def __init__(self, functor, tids=None, count=None):
-        self.functor = functor
-        self.tids = tids or []  # combining multiple sentences vertically
-        self.count = count or 1
-
-    def to_string(self):
-        ret = "---- Slot:\n"
-        ret += "functor: {}\n".format(self.functor)
-        ret += "tids: ["
-        for t in self.tids:
-            ret += (str(t) + ", ")
-        ret += "]\n"
-        ret += "]\n"
-        ret += "----\n"
-        return ret
-
-    def to_json(self):
-        ret = {
-            "functor": self.functor,
-            "tids": self.tids,
-            "count": self.count
-        }
-        return ret
diff --git a/src/pkg/valency/valency/reduce_functions.py b/src/pkg/valency/valency/reduce_functions.py
index 50bd5e1..bf718ef 100644
--- a/src/pkg/valency/valency/reduce_functions.py
+++ b/src/pkg/valency/valency/reduce_functions.py
@@ -9,6 +9,7 @@ import logging
 log = logging.getLogger(__name__)
 
 SENSE_UNDEFINED = "nedefinirano"
+SENTENCE_LIMIT = 10
 
 ## TIDI: use frame.py
 ## TODO: build a list of [Frame] with lists of [Slot]
@@ -70,7 +71,10 @@ def reduce_1(frames, valdb_sensemap=None):
         for functor in fs[0]:
             slots[functor] = Slot(functor=functor)
         # Reduce slots from all frames. (Merge ACT from all frames, ...)
+        sentence_count = len(fs[1])
         for frame in fs[1]:
+            if len(tids) >= SENTENCE_LIMIT:
+                break
             tids += frame.tids
             sentences += frame.sentences
             for sl in frame.slots:
@@ -78,8 +82,13 @@ def reduce_1(frames, valdb_sensemap=None):
         slots_list = []
         for k, e in slots.items():
             slots_list.append(e)
-        # TODO does appending hw_lemma of first frame work for functor frames too?
-        rf = Frame(hw_lemma=fs[1][0].hw, tids=tids, slots=slots_list, sentences=sentences)
+        rf = Frame(
+            hw_lemma=fs[1][0].hw,
+            tids=tids,
+            slots=slots_list,
+            sentences=sentences,
+            sentence_count=sentence_count
+        )
         rf.sort_slots()
         ret_frames.append(rf)
     return sorted_by_len_tids(ret_frames)
@@ -182,7 +191,11 @@ def frames_from_sense_ids(raw_frames, id_map):
         tids = []
         reduced_slots = []
         sentences = []
+
+        sentence_count = len(frames)
         for frame in frames:
+            if len(tids) >= SENTENCE_LIMIT:
+                break
             tids += frame.tids
             sentences += frame.sentences
             for slot in frame.slots:
@@ -204,7 +217,8 @@ def frames_from_sense_ids(raw_frames, id_map):
             hw_lemma="derp",
             tids=tids,
             slots=reduced_slots,
-            sentences=sentences
+            sentences=sentences,
+            sentence_count=sentence_count,
         )
         id_map_entry = (
             id_map.get(tids[0]) or