Question: how long is the term of governor in the state of pennsylvania
[{'answer': 'Four years', 'provenance': [{'wikipedia_id': '252781', 'title': 'List of governors of Pennsylvania', 'start_paragraph_id': 10, 'start_character': 501, 'end_paragraph_id': 10, 'end_character': 511, 'bleu_score': 1.0, 'section': 'Section::::Governors.:Governors of the Commonwealth of Pennsylvania.\n'}]}]