Question: who was the book of mark written to
[{'answer': 'gentile audience', 'provenance': [{'wikipedia_id': '12490', 'title': 'Gospel of Mark', 'start_paragraph_id': 6, 'start_character': 63, 'end_paragraph_id': 6, 'end_character': 79, 'bleu_score': 1.0, 'section': 'Section::::Composition, genre, and setting.:Authorship and genre.\n'}]}, {'answer': 'Greek - speaking Christians'}]