Question: where does the great allegheny passage start in pittsburgh
[{'answer': 'Point State Park in Pittsburgh', 'provenance': [{'wikipedia_id': '1317727', 'title': 'Great Allegheny Passage', 'start_paragraph_id': 2, 'start_character': 521, 'end_paragraph_id': 2, 'end_character': 551, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1317727', 'title': 'Great Allegheny Passage', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 614, 'bleu_score': 0.8785631779692, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6059203530286536733}, 'section': 'Section::::Abstract.'}]}]