Question: when did iran qualify for the world cup
[{'answer': '1978', 'provenance': [{'wikipedia_id': '272865', 'title': 'Iran national football team', 'start_paragraph_id': 2, 'start_character': 271, 'end_paragraph_id': 2, 'end_character': 275, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': '1998', 'provenance': [{'wikipedia_id': '272865', 'title': 'Iran national football team', 'start_paragraph_id': 2, 'start_character': 277, 'end_paragraph_id': 2, 'end_character': 281, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': '2006', 'provenance': [{'wikipedia_id': '272865', 'title': 'Iran national football team', 'start_paragraph_id': 2, 'start_character': 283, 'end_paragraph_id': 2, 'end_character': 287, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': '2014', 'provenance': [{'wikipedia_id': '272865', 'title': 'Iran national football team', 'start_paragraph_id': 1, 'start_character': 189, 'end_paragraph_id': 1, 'end_character': 193, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '272865', 'title': 'Iran national football team', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 483, 'bleu_score': 0.957795280617293, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9504981448150915811}, 'section': 'Section::::Abstract.'}]}]