Question: who was president of argentina during the falklands war
[{'answer': 'Leopoldo Fortunato Galtieri Castelli', 'provenance': [{'wikipedia_id': '42580', 'title': 'Leopoldo Galtieri', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 36, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '42580', 'title': 'Leopoldo Galtieri', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 438, 'bleu_score': 0.742627018626372, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1590489637199586522}, 'section': 'Section::::Abstract.'}]}]