diff --git a/app.py b/app.py
index b38e9a1..96941d9 100755
--- a/app.py
+++ b/app.py
@@ -7,8 +7,10 @@ import random
 import re
 import shutil
 import string
+import sys
 import time
 from pathlib import Path
+from conllu import parse
 
 import requests
 from flask import Flask, render_template, request, send_file, redirect, url_for
@@ -131,7 +133,14 @@ def create_app():
         for subtree_id in subtree_ids:
             annodoc += f'# visual-style	{subtree_id}	bgColor:lightgreen\n'
         with open(os.path.join('media', result_id, 'annodoc', sentence_id), 'r') as rf:
-            annodoc += rf.read() + '\n\n'
+            read_annodoc = rf.read()
+            sentences = parse(read_annodoc)
+
+            # delete `deps` column
+            for token in sentences[0]:
+                token['deps'] = None
+            annodoc += sentences[0].serialize()
+
         return {'annodoc': annodoc}
 
     @app.route('/stark/result/<result_id>/<subtree_hash>', methods=['GET'])
@@ -200,9 +209,13 @@ def create_app():
                     file_path = os.path.join('media', filename, 'result.tsv')
                 else:
                     file_path = path
-                f_t = os.path.getmtime(file_path)
-                c_t = time.time()
-                file_age_seconds = c_t - f_t
+                if os.path.exists(file_path):
+                    f_t = os.path.getmtime(file_path)
+                    c_t = time.time()
+                    file_age_seconds = c_t - f_t
+                else:
+                    # delete empty folders
+                    file_age_seconds = 10000000
                 if file_age_seconds > DAYS_BEFORE_DELETION * 86400:
                     if os.path.isdir(path):
                         shutil.rmtree(os.path.join('media', filename), ignore_errors=True)
@@ -245,10 +258,20 @@ def create_app():
             if order_by is not None and order_by in head:
                 sort_id = head.index(order_by)
                 if order_type == 'asc':
-                    # check if a number can be converted to float or int
-                    ordered_content = sorted(content[1:], key=lambda x: -1 * float(x[sort_id]) if x[sort_id].isnumeric() or re.match(r'^-?\d+(?:\.\d+)$', x[sort_id]) is not None and order_by != 'Ratio' else x[sort_id], reverse=True)
+                    def sort_func(x):
+                        if x[sort_id] == 'NaN':
+                            return float('-inf')
+                        return -1 * float(x[sort_id]) if x[sort_id].isnumeric() or re.match(r'^-?\d+(?:\.\d+)$', x[
+                            sort_id]) is not None else x[sort_id]
+                    ordered_content = sorted(content[1:], key=sort_func, reverse=True)
+
                 else:
-                    ordered_content = sorted(content[1:], key=lambda x: -1 * float(x[sort_id]) if x[sort_id].isnumeric() or re.match(r'^-?\d+(?:\.\d+)$', x[sort_id]) is not None and order_by != 'Ratio' else x[sort_id])
+                    def sort_func(x):
+                        if x[sort_id] == 'NaN':
+                            return float('inf')
+                        return -1 * float(x[sort_id]) if x[sort_id].isnumeric() or re.match(r'^-?\d+(?:\.\d+)$', x[
+                            sort_id]) is not None else x[sort_id]
+                    ordered_content = sorted(content[1:], key=sort_func)
             else:
                 ordered_content = content[1:]
 
diff --git a/requirements.txt b/requirements.txt
index 04e1df4..2edd9ba 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,3 +2,4 @@ Flask==3.0.0
 requests==2.31.0
 flask-babel==4.0.0
 stark @ git+https://github.com/clarinsi/STARK@master
+conllu==6.0.0
\ No newline at end of file
diff --git a/static/js/result.js b/static/js/result.js
index 36b0a02..7b6b1f3 100644
--- a/static/js/result.js
+++ b/static/js/result.js
@@ -47,12 +47,12 @@ $(document).ready(function() {
         if (grew_url == 'unknown') {
             $(".grew-link").html("/");
         } else {
-            $(".grew-link").html("<a href=" + grew_url + ">" + grew_link_text + "</a>");
+            $(".grew-link").html("<a href=" + grew_url + " target='_blank'>" + grew_link_text + "</a>");
         }
         if (other_examples == 'unknown') {
             $(".other-examples").html("/");
         } else {
-            $(".other-examples").html("<a href=" + other_examples + ">" + other_examples_text + "</a>");
+            $(".other-examples").html("<a href=" + other_examples + " target='_blank'>" + other_examples_text + "</a>");
         }
     });
     $(".close-visualization").click(function() {
diff --git a/templates/result.html b/templates/result.html
index d0ccba1..3db4c28 100644
--- a/templates/result.html
+++ b/templates/result.html
@@ -26,7 +26,7 @@
             </div>
           </div>
           <div class="visualization-table">
-            <button class="close-visualization btn-flat grey-text text-darken-1" style="float: right; margin: 10px;">{{ _('Close') }}</button>
+            <button class="close-visualization btn-flat grey-text text-darken-1" style="float: right; margin: 10px;">&#10006; {{ _('Close') }}</button>
             <table style="border: none;">
               <thead>
                 <tr>
diff --git a/translations/en/LC_MESSAGES/messages.mo b/translations/en/LC_MESSAGES/messages.mo
index c776d45..7aeb47a 100644
Binary files a/translations/en/LC_MESSAGES/messages.mo and b/translations/en/LC_MESSAGES/messages.mo differ
diff --git a/translations/en/LC_MESSAGES/messages.po b/translations/en/LC_MESSAGES/messages.po
index 30f3253..b5cd922 100644
--- a/translations/en/LC_MESSAGES/messages.po
+++ b/translations/en/LC_MESSAGES/messages.po
@@ -412,7 +412,7 @@ msgstr "Download complete results"
 
 #: templates/result.html:29
 msgid "Close"
-msgstr ""
+msgstr "Close Visualization"
 
 #: templates/result.html:33
 msgid "Visualization"
diff --git a/translations/sl/LC_MESSAGES/messages.mo b/translations/sl/LC_MESSAGES/messages.mo
index 4f5392e..c5eddc1 100644
Binary files a/translations/sl/LC_MESSAGES/messages.mo and b/translations/sl/LC_MESSAGES/messages.mo differ
diff --git a/translations/sl/LC_MESSAGES/messages.po b/translations/sl/LC_MESSAGES/messages.po
index 7106adc..7e17aa0 100644
--- a/translations/sl/LC_MESSAGES/messages.po
+++ b/translations/sl/LC_MESSAGES/messages.po
@@ -413,7 +413,7 @@ msgstr "Prenesi datoteko s celotnimi rezultati"
 
 #: templates/result.html:29
 msgid "Close"
-msgstr "Zapri"
+msgstr "Zapri vizualizacijo"
 
 #: templates/result.html:33
 msgid "Visualization"