Question: how many countries are served by qantas operations
[{'answer': '14', 'provenance': [{'wikipedia_id': '25254', 'title': 'Qantas', 'start_paragraph_id': 2, 'start_character': 160, 'end_paragraph_id': 2, 'end_character': 162, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]