Question: who is the singer of bengali film sathi
[{'answer': 'Bijoy ( Jeet )', 'provenance': [{'wikipedia_id': '19998244', 'title': 'Sathi (2002 film)', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 15, 'bleu_score': 1.0, 'section': 'Section::::Plot.\n'}]}, {'provenance': [{'wikipedia_id': '19998244', 'title': 'Sathi (2002 film)', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 2798, 'bleu_score': 0.9817788767801471, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8337119292062640356}, 'section': 'Section::::Plot.\n'}]}]