diff --git a/src/graph_builder.py b/src/graph_builder.py
index 45742a4f9708c6c2ef44fefd6bb8deed635cd914..46204f9686f61e6e9224e4090543521a428dc12d 100644
--- a/src/graph_builder.py
+++ b/src/graph_builder.py
@@ -13,7 +13,7 @@ import logging
 
 def build_graph(years=[],include_utterances=False,subcat=False):
     
-
+    #a small helper function
     def maybe_subcat(string):
         if not subcat:
             return False
@@ -37,16 +37,11 @@ def build_graph(years=[],include_utterances=False,subcat=False):
         #and the year
         year = exact_date[:4]
        
-        
+        #add a trial node 
         trialnode = dh.TrialNode(exact_date,fp+"_"+trial_index_infile)
         nodeindex,trialindex = gh.maybe_new_index(trialnode,node_index_dict)
         G.add_node(trialindex, label="Trial", nodeobj=trialnode)
             
-        
-        #yearnode = dh.YearNode(year)
-        #nodeindex,yindex = gh.maybe_new_index(yearnode,node_index_dict)
-        #G.add_node(yindex, label="Year", nodeobj=yearnode)   
-        #G.add_edge(trialindex,yindex,edge_class="in-year")
             
 
         
@@ -55,18 +50,16 @@ def build_graph(years=[],include_utterances=False,subcat=False):
         #offs = [dh.create_cat_elm(of,"offence") for of in offs]
         descriptions = [dh.HasDescriptionNode(of) for of in offs]
         logging.info("descriptions found: {}".format(descriptions))
-        #[desc.simplify_to_direct_object() for desc in descriptions]
         offs = [dh.OffenceNode(of,"offence",subcat=maybe_subcat("offence"),dummy=False) for of in offs]
-        #print(descriptions)
-        #asd
+        
         for i,off in enumerate(offs):
             
-            #each offence has a text and a (symbolic) category
+            #add offence node
             nodeindex,offindex = gh.maybe_new_index(off,node_index_dict)
             G.add_node(offindex, label="Offence", nodeobj=off)
             G.add_edge(trialindex,offindex,edge_class="with-offence")
-            #nodeindex+=1
-
+            
+            # add textual description node
             nodeindex,descr_index = gh.maybe_new_index(descriptions[i],node_index_dict)
             G.add_node(descr_index, label="Description", nodeobj=descriptions[i])
             G.add_edge(trialindex,descr_index,edge_class="with-offence-description")
@@ -105,6 +98,7 @@ def build_graph(years=[],include_utterances=False,subcat=False):
         ds = [dh.NamedEntityNode(dname) for dname in dnames]
         for d in ds:
             
+            #inser a defendant node and connect it to trial
             nodeindex,dindex = gh.maybe_new_index(d,node_index_dict)
             G.add_node(dindex, label=d.get_fullname(), nodeobj=d)
             G.add_edge(trialindex,dindex,edge_class="with-defendant")
@@ -116,7 +110,7 @@ def build_graph(years=[],include_utterances=False,subcat=False):
             G.add_node(victindex, label=vict.get_fullname(), nodeobj=vict)
             G.add_edge(trialindex,victindex,edge_class="with-victim")
         
-        #we get the text from the trial account to extract named entities and utterances
+        #we get the text from the trial account to extract various other named entities and utterances
         ps = div.findAll("p")
         ps = [p for p in ps if len(p.findAll("persname")) == 1 and len(p.findAll("u"))]
         ents = [ p.findAll("persname")[0] for p in ps]