Question: where does the oil go from a pump jack
[{'answer': 'reciprocating piston pump', 'provenance': [{'wikipedia_id': '414352', 'title': 'Pumpjack', 'start_paragraph_id': 1, 'start_character': 41, 'end_paragraph_id': 1, 'end_character': 66, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]