Question: what airlines fly into salt lake city airport
[{'answer': 'Delta Air Lines', 'provenance': [{'wikipedia_id': '264241', 'title': 'Salt Lake City International Airport', 'start_paragraph_id': 2, 'start_character': 42, 'end_paragraph_id': 2, 'end_character': 57, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'SkyWest Airlines', 'provenance': [{'wikipedia_id': '264241', 'title': 'Salt Lake City International Airport', 'start_paragraph_id': 2, 'start_character': 105, 'end_paragraph_id': 2, 'end_character': 121, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Southwest Airlines', 'provenance': [{'wikipedia_id': '264241', 'title': 'Salt Lake City International Airport', 'start_paragraph_id': 2, 'start_character': 198, 'end_paragraph_id': 2, 'end_character': 216, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'American Airlines', 'provenance': [{'wikipedia_id': '264241', 'title': 'Salt Lake City International Airport', 'start_paragraph_id': 2, 'start_character': 218, 'end_paragraph_id': 2, 'end_character': 235, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Alaska Airlines', 'provenance': [{'wikipedia_id': '264241', 'title': 'Salt Lake City International Airport', 'start_paragraph_id': 2, 'start_character': 241, 'end_paragraph_id': 2, 'end_character': 256, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '264241', 'title': 'Salt Lake City International Airport', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 378, 'bleu_score': 0.546096498334631, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 442877765740820232}, 'section': 'Section::::Abstract.'}]}]