Question: who plays the son in how i met your mother
[{'answer': 'David Clayton Henrie', 'provenance': [{'wikipedia_id': '5638374', 'title': 'David Henrie', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 20, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '5638374', 'title': 'David Henrie', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 276, 'bleu_score': 0.7513743161199341, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10210853217500610518}, 'section': 'Section::::Abstract.'}]}]