Question: what is the latest version of c#
[{'answer': 'C# 7.0', 'provenance': [{'wikipedia_id': '2356196', 'title': 'C Sharp (programming language)', 'start_paragraph_id': 140, 'start_character': 427, 'end_paragraph_id': 140, 'end_character': 433, 'bleu_score': 1.0, 'section': 'Section::::Distinguishing features.:Functional programming.\n'}]}]