Question: who built the jantar mantar observation in jaipur and delhi
[{'answer': 'Sawai Jai Singh II', 'provenance': [{'wikipedia_id': '2605334', 'title': 'Jantar Mantar, Jaipur', 'start_paragraph_id': 1, 'start_character': 110, 'end_paragraph_id': 1, 'end_character': 128, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2605334', 'title': 'Jantar Mantar, Jaipur', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 521, 'bleu_score': 0.690536115843286, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2832971552604375201}, 'section': 'Section::::Abstract.'}]}]