Question: what are the names of the four vedas
[{'answer': 'Rigveda', 'provenance': [{'wikipedia_id': '1527181', 'title': 'Vedas', 'start_paragraph_id': 3, 'start_character': 165, 'end_paragraph_id': 3, 'end_character': 172, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Yajurveda', 'provenance': [{'wikipedia_id': '1527181', 'title': 'Vedas', 'start_paragraph_id': 3, 'start_character': 178, 'end_paragraph_id': 3, 'end_character': 187, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Samaveda', 'provenance': [{'wikipedia_id': '1527181', 'title': 'Vedas', 'start_paragraph_id': 3, 'start_character': 193, 'end_paragraph_id': 3, 'end_character': 201, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Atharvaveda', 'provenance': [{'wikipedia_id': '1527181', 'title': 'Vedas', 'start_paragraph_id': 3, 'start_character': 210, 'end_paragraph_id': 3, 'end_character': 221, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1527181', 'title': 'Vedas', 'start_paragraph_id': 3, 'start_character': 137, 'end_paragraph_id': 3, 'end_character': 619, 'bleu_score': 0.9694566079002921, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 589572104052414147}, 'section': 'Section::::Abstract.'}]}]