Question: who played the son in kramer vs kramer
[{'answer': 'Justin Worthington Henry'}, {'provenance': [{'wikipedia_id': '1392362', 'title': 'Justin Henry', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 609, 'bleu_score': 0.9301660994809521, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9889433165758402839}, 'section': 'Section::::Abstract.'}]}]