Question: how many megapixels does a samsung galaxy s8 have
[{'answer': '12 - megapixel rear camera'}, {'answer': '8 - megapixel'}, {'provenance': [{'wikipedia_id': '53335244', 'title': 'Samsung Galaxy S8', 'start_paragraph_id': 14, 'start_character': 0, 'end_paragraph_id': 14, 'end_character': 1077, 'bleu_score': 0.9505250829266311, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9136838055936153381}, 'section': 'Section::::Specifications.:Hardware.\n'}]}]