Question: what is the name of the knowledge navigator in built into apple's ios
[{'answer': 'Siri', 'provenance': [{'wikipedia_id': '444049', 'title': 'Knowledge Navigator', 'start_paragraph_id': 14, 'start_character': 11, 'end_paragraph_id': 14, 'end_character': 15, 'bleu_score': 1.0, 'section': 'Section::::Reception.\n'}]}, {'provenance': [{'wikipedia_id': '444049', 'title': 'Knowledge Navigator', 'start_paragraph_id': 15, 'start_character': 0, 'end_paragraph_id': 15, 'end_character': 294, 'bleu_score': 0.957870874785216, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4237345039434107543}, 'section': 'Section::::Siri.\n'}]}]