Question: who is the actor that plays ty in heartland
[{'answer': 'Graham Wardle', 'provenance': [{'wikipedia_id': '40147940', 'title': 'Graham Wardle', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 13, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '40147940', 'title': 'Graham Wardle', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 152, 'bleu_score': 0.7965020533851941, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6099758197002110026}, 'section': 'Section::::Abstract.'}]}]