Determine if the sentence is true based on the text below:
Sir David John White was in the BBC comedy series "Only Fools and Horses" several years after he was in the ITV crime drama "A Touch of Frost".

Sir David John White, {'1': ", '2': ", '3': ", '4': "} (born 2 February 1940), better known by his stage name David Jason, is an English actor and comedian. He is perhaps best known for his portrayals of Derek "Del Boy" Trotter in the BBC comedy series "Only Fools and Horses", and Detective Inspector Jack Frost in the ITV crime drama "A Touch of Frost".
It's impossible to say