Question: what is the song 99 red balloons about
[{'answer': 'anti-war protest song'}, {'provenance': [{'wikipedia_id': '884209', 'title': '99 Luftballons', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 421, 'bleu_score': 0.835215354882413, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13485709603955724699}, 'section': 'Section::::Abstract.'}]}]