Question: when did ford start the twin i beam
[{'answer': '1965', 'provenance': [{'wikipedia_id': '895409', 'title': 'Ford F-Series', 'start_paragraph_id': 16, 'start_character': 3, 'end_paragraph_id': 16, 'end_character': 7, 'bleu_score': 1.0, 'section': 'Section::::Fourth generation (1961–1966).\n'}]}, {'provenance': [{'wikipedia_id': '895409', 'title': 'Ford F-Series', 'start_paragraph_id': 16, 'start_character': 0, 'end_paragraph_id': 16, 'end_character': 431, 'bleu_score': 0.8409682712135431, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13830244547392083711}, 'section': 'Section::::Fourth generation (1961–1966).\n'}]}]