fix: fixes queries for related entities

this is only a preliminary fix, queries are slow as pagination is only implemented for second level entities. Might need a more thorough rewrite.

intavia_backend/sparql/query_entities_v2_1.sparql

@@ -62,10 +62,14 @@
 {%- endif -%}
 {%- if related_entities_id -%}
 ?entity_proxy bioc:bearer_of ?role . ?role ^bioc:had_participant_in_role|^bioc:occured_in_the_presence_of_in_role ?event .
+    {SELECT ?event
+    WHERE {
     {%- for entity in related_entities_id -%}
         {?event (crm:P7_took_place_at|((bioc:had_participant_in_role|bioc:occured_in_the_presence_of_in_role)/^bioc:bearer_of))/idmcore:proxy_for <{{entity}}>}
         {% if not loop.last %}UNION{% endif %}
         {%- endfor -%}
+    }
+        }
 {%- endif -%}
 {%- if event_role -%}
 ?entity_proxy bioc:bearer_of ?role .