Question: in the early 1800s what four countries claimed land in oregon
[{'answer': 'Great Britain', 'provenance': [{'wikipedia_id': '327342', 'title': 'Oregon Country', 'start_paragraph_id': 4, 'start_character': 72, 'end_paragraph_id': 4, 'end_character': 85, 'bleu_score': 1.0, 'section': 'Section::::Early exploration.\n'}]}, {'answer': 'France', 'provenance': [{'wikipedia_id': '327342', 'title': 'Oregon Country', 'start_paragraph_id': 9, 'start_character': 60, 'end_paragraph_id': 9, 'end_character': 66, 'bleu_score': 1.0, 'section': 'Section::::Territorial evolution.\n'}]}, {'answer': 'Russia', 'provenance': [{'wikipedia_id': '327342', 'title': 'Oregon Country', 'start_paragraph_id': 9, 'start_character': 68, 'end_paragraph_id': 9, 'end_character': 74, 'bleu_score': 1.0, 'section': 'Section::::Territorial evolution.\n'}]}, {'answer': 'Spain', 'provenance': [{'wikipedia_id': '327342', 'title': 'Oregon Country', 'start_paragraph_id': 4, 'start_character': 248, 'end_paragraph_id': 4, 'end_character': 253, 'bleu_score': 1.0, 'section': 'Section::::Early exploration.\n'}]}, {'provenance': [{'wikipedia_id': '327342', 'title': 'Oregon Country', 'start_paragraph_id': 9, 'start_character': 0, 'end_paragraph_id': 9, 'end_character': 1686, 'bleu_score': 0.9574416497826711, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6249026074863256393}, 'section': 'Section::::Territorial evolution.\n'}]}]