Question: who are the main characters in the parable of the good samaritan
[{'answer': 'a traveler'}, {'answer': 'a priest', 'provenance': [{'wikipedia_id': '149947', 'title': 'Parable of the Good Samaritan', 'start_paragraph_id': 1, 'start_character': 190, 'end_paragraph_id': 1, 'end_character': 198, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'a Levite', 'provenance': [{'wikipedia_id': '149947', 'title': 'Parable of the Good Samaritan', 'start_paragraph_id': 1, 'start_character': 208, 'end_paragraph_id': 1, 'end_character': 216, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'a Samaritan', 'provenance': [{'wikipedia_id': '149947', 'title': 'Parable of the Good Samaritan', 'start_paragraph_id': 1, 'start_character': 260, 'end_paragraph_id': 1, 'end_character': 271, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '149947', 'title': 'Parable of the Good Samaritan', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 669, 'bleu_score': 0.8392576385850771, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1427275503064869268}, 'section': 'Section::::Abstract.'}]}]