Question: what is the population of the sei whale
[{'answer': 'about 80,000', 'provenance': [{'wikipedia_id': '377441', 'title': 'Sei whale', 'start_paragraph_id': 3, 'start_character': 290, 'end_paragraph_id': 3, 'end_character': 302, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '377441', 'title': 'Sei whale', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 350, 'bleu_score': 0.780737762765172, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14261772378315555809}, 'section': 'Section::::Abstract.'}]}]