Question: what is the symbol for approximately equal to
[{'answer': '≈', 'provenance': [{'wikipedia_id': '73634', 'title': 'List of mathematical symbols', 'start_paragraph_id': 1, 'start_character': 122, 'end_paragraph_id': 1, 'end_character': 122, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]