Question: who was the american commander at the battle of king's mountain
[{'answer': 'William Campbell', 'provenance': [{'wikipedia_id': '698848', 'title': 'Battle of Kings Mountain', 'start_paragraph_id': 2, 'start_character': 338, 'end_paragraph_id': 2, 'end_character': 354, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '698848', 'title': 'Battle of Kings Mountain', 'start_paragraph_id': 16, 'start_character': 0, 'end_paragraph_id': 16, 'end_character': 1576, 'bleu_score': 0.9814104111698231, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13922409306315299671}, 'section': 'Section::::Prelude to battle.:Muster at Sycamore Shoals.\n'}]}]