Question: what unit of mass is 1/1000 of a kilogram
[{'answer': 'gram', 'provenance': [{'wikipedia_id': '16619', 'title': 'Kilogram', 'start_paragraph_id': 0, 'start_character': 4, 'end_paragraph_id': 0, 'end_character': 8, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '16619', 'title': 'Kilogram', 'start_paragraph_id': 9, 'start_character': 4, 'end_paragraph_id': 9, 'end_character': 436, 'bleu_score': 0.773733451534179, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9928985745631410207}, 'section': 'Section::::Definition.:Previous definitions.\n'}]}]