What is williow canyon of Roberta Lockhart?
{'header': ['Information', 'Dysart', 'Shadow Ridge', 'Valley Vista', 'Willow Canyon'], 'page_title': 'Dysart Unified School District', 'section_title': 'High schools', 'caption': 'High schools in Dysart USD', 'rows': [['Location', 'El Mirage', 'Surprise', 'Surprise', 'Surprise'], ['Year opened', '1963', '2009', '2006', '2003'], ['School colors', 'Red, white, black', 'Burgundy, gold, black', 'Purple, black, silver', 'Midnight blue, silver'], ['School mascot', 'Demon', 'Stallion', 'Monsoon', 'Wildcat'], ['Principal', 'Roberta Lockhart', 'Michael Hawkins', 'Dr. Tammy Hall', 'Anthony Capuano']]}