Question: when do they stop measuring crown to rump
[{'answer': 'later in pregnancy', 'provenance': [{'wikipedia_id': '7759491', 'title': 'Crown-rump length', 'start_paragraph_id': 3, 'start_character': 880, 'end_paragraph_id': 3, 'end_character': 898, 'bleu_score': 1.0, 'section': 'Section::::Measuring.\n'}]}, {'provenance': [{'wikipedia_id': '7759491', 'title': 'Crown-rump length', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 1107, 'bleu_score': 0.9750394037077321, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11243699878042642269}, 'section': 'Section::::Measuring.\n'}]}]