Question: when did west coast eagles start in the afl
[{'answer': '1987', 'provenance': [{'wikipedia_id': '295230', 'title': 'West Coast Eagles', 'start_paragraph_id': 2, 'start_character': 121, 'end_paragraph_id': 2, 'end_character': 125, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '295230', 'title': 'West Coast Eagles', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 689, 'bleu_score': 0.716455779624222, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 968891294996013952}, 'section': 'Section::::Abstract.'}]}]