Question: when does the equinox occur in the northern hemisphere
[{'answer': 'March', 'provenance': [{'wikipedia_id': '10100', 'title': 'Equinox', 'start_paragraph_id': 1, 'start_character': 208, 'end_paragraph_id': 1, 'end_character': 213, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '10100', 'title': 'Equinox', 'start_paragraph_id': 8, 'start_character': 0, 'end_paragraph_id': 8, 'end_character': 334, 'bleu_score': 0.715984886453359, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 298191724573148205}, 'section': 'Section::::Equinoxes on Earth.:General.\n'}]}]