Feat/relation extraction basedon term v0
This MR also includes:
- Grouping demos
- add in
on_occurrence_relation_extraction.py(OnOccurrenceRelationExtraction._create_relatedto_relation) the creation of the reverse "related_to" meta relation.
This MR also includes:
on_occurrence_relation_extraction.py (OnOccurrenceRelationExtraction._create_relatedto_relation) the creation of the reverse "related_to" meta relation.