Question: which player throws the baseball toward the catcher from an elevated mound
[{'answer': 'pitcher', 'provenance': [{'wikipedia_id': '968099', 'title': 'Baseball field', 'start_paragraph_id': 4, 'start_character': 65, 'end_paragraph_id': 4, 'end_character': 72, 'bleu_score': 1.0, 'section': 'Section::::Specifications.\n'}]}, {'provenance': [{'wikipedia_id': '968099', 'title': 'Baseball field', 'start_paragraph_id': 30, 'start_character': 0, 'end_paragraph_id': 30, 'end_character': 610, 'bleu_score': 0.816808571179594, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10991235664879429543}, 'section': "Section::::Pitcher's mound.\n"}]}]