Question: what is the purpose of the sky tower
[{'answer': 'observation and telecommunications'}, {'provenance': [{'wikipedia_id': '264342', 'title': 'Sky Tower (Auckland)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 432, 'bleu_score': 0.71758158395537, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8204014455138005488}, 'section': 'Section::::Abstract.'}]}]