Question: who played the colorado kid in rio bravo
[{'answer': 'Ricky Nelson'}, {'provenance': [{'wikipedia_id': '81100', 'title': 'Rio Bravo (film)', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 436, 'bleu_score': 0.9735040436119741, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15978044358761200474}, 'section': 'Section::::Plot.\n'}]}, {'provenance': [{'wikipedia_id': '81100', 'title': 'Rio Bravo (film)', 'start_paragraph_id': 22, 'start_character': 0, 'end_paragraph_id': 22, 'end_character': 41, 'bleu_score': 0.6147881529512641, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15978044358761200474}, 'section': 'Section::::Cast.\n'}]}, {'provenance': [{'wikipedia_id': '81100', 'title': 'Rio Bravo (film)', 'section': 'Section::::Plot.\n', 'start_paragraph_id': 6, 'end_paragraph_id': 6, 'meta': {'evidence_span': ["Chance's friend Pat Wheeler (Ward Bond) and his wagon train of supplies stop in town, with a young gunslinger, Colorado Ryan (Ricky Nelson), riding guard. Inside the jail, Stumpy (Walter Brennan), Chance's game-legged deputy, keeps watch over the jail and Joe, who knows that Stumpy holds an old grudge against Joe's wealthy and powerful brother.", 'young gunslinger, Colorado Ryan (Ricky Nelson)', "Chance's friend Pat Wheeler (Ward Bond) and his wagon train of supplies stop in town, with a young gunslinger, Colorado Ryan (Ricky Nelson), riding guard. Inside the jail, Stumpy (Walter Brennan), Chance's game-legged deputy, keeps watch over the jail and Joe, who knows that Stumpy holds an old grudge against Joe's wealthy and powerful brother. Joe warns his jailers that Nathan Burdette will not like how his brother is being treated. A mysterious woman nicknamed Feathers (Angie Dickinson) is in the saloon, playing poker. In the meantime, Dude and Chance patrol the town. Hotel owner Carlos (Pedro"]}}]}]