Question: where did the orioles play before camden yards
[{'answer': 'Memorial Stadium', 'provenance': [{'wikipedia_id': '4340', 'title': 'Baltimore Orioles', 'start_paragraph_id': 15, 'start_character': 286, 'end_paragraph_id': 15, 'end_character': 302, 'bleu_score': 1.0, 'section': 'Section::::History.:Baltimore Orioles.:Seeds of success (1954–1959).\n'}]}, {'answer': "Sportsman 's Park", 'provenance': [{'wikipedia_id': '4340', 'title': 'Baltimore Orioles', 'start_paragraph_id': 139, 'start_character': 308, 'end_paragraph_id': 139, 'end_character': 332, 'bleu_score': 1.0, 'section': 'Section::::Postseason appearances.\n'}]}, {'answer': 'Lloyd Street Grounds', 'provenance': [{'wikipedia_id': '4340', 'title': 'Baltimore Orioles', 'start_paragraph_id': 9, 'start_character': 808, 'end_paragraph_id': 9, 'end_character': 828, 'bleu_score': 1.0, 'section': 'Section::::History.:Milwaukee Brewers.\n'}]}]