Question: how many hydrogen bonds form between g and c
[{'answer': 'three', 'provenance': [{'wikipedia_id': '1056866', 'title': 'GC-content', 'start_paragraph_id': 3, 'start_character': 209, 'end_paragraph_id': 3, 'end_character': 214, 'bleu_score': 1.0, 'section': 'Section::::Structure.\n'}]}]