Question: what is the si unit of youngs modulus
[{'answer': 'pascal', 'provenance': [{'wikipedia_id': '228108', 'title': "Young's modulus", 'start_paragraph_id': 13, 'start_character': 156, 'end_paragraph_id': 13, 'end_character': 162, 'bleu_score': 1.0, 'section': 'Section::::Definition.:Formula and units.\n'}]}]