Question: in 1939 germany agreed to sign a non-aggression pact with which country
[{'answer': 'the Soviet Union', 'provenance': [{'wikipedia_id': '20950', 'title': 'Molotov–Ribbentrop Pact', 'start_paragraph_id': 1, 'start_character': 186, 'end_paragraph_id': 1, 'end_character': 202, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]