Question: what was a goal of the student protestors in tianamen square in 1989
[{'answer': 'freedom of the press', 'provenance': [{'wikipedia_id': '44534', 'title': '1989 Tiananmen Square protests', 'start_paragraph_id': 2, 'start_character': 729, 'end_paragraph_id': 2, 'end_character': 749, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '44534', 'title': '1989 Tiananmen Square protests', 'start_paragraph_id': 2, 'start_character': 87, 'end_paragraph_id': 2, 'end_character': 914, 'bleu_score': 0.7849210591808181, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11210307234754154684}, 'section': 'Section::::Abstract.'}]}]