Question: what kind of ammo does a p90 use
[{'answer': '5.7 × 28mm'}, {'provenance': [{'wikipedia_id': '487339', 'title': 'FN P90', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 628, 'bleu_score': 0.8602284913125441, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15462993687933948513}, 'section': 'Section::::History.:Development.\n'}]}]