Question: the formed elements in the blood are mostly
[{'answer': 'red blood cells', 'provenance': [{'wikipedia_id': '3997', 'title': 'Blood', 'start_paragraph_id': 2, 'start_character': 456, 'end_paragraph_id': 2, 'end_character': 471, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3997', 'title': 'Blood', 'start_paragraph_id': 19, 'start_character': 0, 'end_paragraph_id': 19, 'end_character': 546, 'bleu_score': 0.9134823256397261, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13689760182403566216}, 'section': 'Section::::Constituents.:In mammals.\n'}]}]