user: Question: How many different actors from the Second national tour year 2 played the character played by Oliver Tompsett from the original West End cast?
Columns: ['Role', 'Original Broadway Cast', 'Current Broadway Cast', 'Original Toronto Cast', 'First National Tour Cast', 'Original Australian Cast', 'Original West End Cast', 'Current West End Cast', 'Second National Tour Cast', 'Second National Tour Year 2']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Drew Boley', 'Constantine Maroulis', 'Aaron C. Finley', 'Yvan Pedneault', 'Constantine Maroulis', 'Justin Burford', 'Oliver Tompsett', 'Ross Hunter', 'Dominique Scott', 'Dominique Scott']
SQL:

assistant: SELECT COUNT("Second National Tour Year 2") FROM "Table" WHERE "Original West End Cast" = 'Oliver Tompsett';