code: def add_event_property_edges(event_entity, entries):
      
      do_not_log = ['@type', '@id',
              'http://worldmodelers.com/DataProvenance#sourced_from']
  
      for prop in event_entity:
          if prop not in do_not_log:
              value = event_entity[prop]
              value_entry = None
              value_str = None
              if '@id' in value[0]:
                  value = value[0]['@id']
  
                  if value in entries:
                      value_str = get_entry_compact_text_repr(entries[value],
                                                              entries)
                  #get_entry_compact_text_repr(entry, entries)
  
              if value_str is not None:
                  edges.append([shorter_name(event_entity['@id']),
                                             shorter_name(value),
                                             shorter_name(prop)])
                  node_labels[shorter_name(value)] = value_str
docs: Adds edges to the graph for event properties.