Question: what data structure is used to represent connections in a network
[{'answer': 'links ( or edges )'}, {'provenance': [{'wikipedia_id': '16981683', 'title': 'Network science', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 812, 'bleu_score': 0.9815648442794911, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7627706659016682964}, 'section': 'Section::::Abstract.'}]}]