Question: who does katara end up with in avatar
[{'answer': 'Aang', 'provenance': [{'wikipedia_id': '2236503', 'title': 'Katara (Avatar: The Last Airbender)', 'start_paragraph_id': 2, 'start_character': 327, 'end_paragraph_id': 2, 'end_character': 331, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2236503', 'title': 'Katara (Avatar: The Last Airbender)', 'start_paragraph_id': 15, 'start_character': 0, 'end_paragraph_id': 15, 'end_character': 319, 'bleu_score': 0.918221068290973, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9470963157939655155}, 'section': 'Section::::Plot overview.:"Avatar: The Last Airbender".\n'}]}]