Question: what is the first cell of a human called
[{'answer': 'zygote', 'provenance': [{'wikipedia_id': '12276398', 'title': 'Human embryonic development', 'start_paragraph_id': 1, 'start_character': 349, 'end_paragraph_id': 1, 'end_character': 355, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '12276398', 'title': 'Human embryonic development', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 763, 'bleu_score': 0.710581244211767, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3978688151747485144}, 'section': 'Section::::Abstract.'}]}]