user: ### NOW ANSWER:
Question: What was the Friday June 3 practice time of the rider who did 20' 50.45 108.623mph on Thursday, June 2?
Columns: ['Rank', 'Rider', 'Mon 30 May', 'Tues 31 May', 'Wed 1 June', 'Thurs 2 June', 'Fri 3 June']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Klaus Klaffenböck / Dan Sayle LCR Honda 600cc', "20' 24.66 110.911mph", 'Cancelled No Time', "19' 54.05 113.754mph", "19' 55.96 113.572mph", "21' 02.39 107.596mph"]
SQL:

assistant: SELECT "Fri 3 June" FROM "Table" WHERE "Thurs 2 June" = '20'' 50.45 108.623mph';