Question: after defeating athens in the peloponnesian war sparta was defeated in 371 b.c.e. by what city-state
[{'answer': 'Thebes', 'provenance': [{'wikipedia_id': '24121', 'title': 'Peloponnesian War', 'start_paragraph_id': 1, 'start_character': 1283, 'end_paragraph_id': 1, 'end_character': 1289, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '24121', 'title': 'Peloponnesian War', 'start_paragraph_id': 54, 'start_character': 0, 'end_paragraph_id': 54, 'end_character': 381, 'bleu_score': 0.9720210313175831, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16726545729784642882}, 'section': 'Section::::Aftermath.\n'}]}]