Question: polar bodies are produced during the formation of
[{'answer': 'an egg cell during oogenesis', 'provenance': [{'wikipedia_id': '3607962', 'title': 'Polar body', 'start_paragraph_id': 1, 'start_character': 69, 'end_paragraph_id': 1, 'end_character': 97, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3607962', 'title': 'Polar body', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 589, 'bleu_score': 0.938670716106456, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4105152621831541093}, 'section': 'Section::::Abstract.'}]}]