Question: in the song i drive your truck who is he talking about
[{'answer': 'his brother', 'provenance': [{'wikipedia_id': '38149887', 'title': 'I Drive Your Truck', 'start_paragraph_id': 3, 'start_character': 56, 'end_paragraph_id': 3, 'end_character': 67, 'bleu_score': 1.0, 'section': 'Section::::Content.\n'}]}, {'answer': 'his brother , who died in action in the United States Army'}, {'provenance': [{'wikipedia_id': '38149887', 'title': 'I Drive Your Truck', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 425, 'bleu_score': 0.941591348007749, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 425736733149908425}, 'section': 'Section::::Content.\n'}]}, {'provenance': [{'wikipedia_id': '38149887', 'title': 'I Drive Your Truck', 'section': 'Section::::Content.\n', 'start_paragraph_id': 3, 'end_paragraph_id': 3, 'meta': {'evidence_span': ['The song is about the narrator driving a truck owned by his brother, who died in action in the United States Army.', 'The song is about the narrator driving a truck owned by his brother,', 'The song is about the narrator driving a truck owned by his brother,']}}]}, {'provenance': [{'wikipedia_id': '38149887', 'title': 'I Drive Your Truck', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['The song is about the narrator driving a truck owned by his brother, who died in action in the United States Army.', 'The song is about the narrator driving a truck owned by his brother,', 'his album "Hard 2 Love". The song is about the narrator driving a truck owned by his brother, who died in action in the United States Army. Co-writer Connie']}}]}]