Simplify the following text for a Grade 7 native English-speaking person.
Original: Crowe won the Academy Award for Best Actor for Gladiator in 2001 and has received three Academy Award nominations for Best Actor in a Leading Role : The Insider ( 1999 ) , Gladiator ( 2000 ) and A Beautiful Mind ( 2001 ) .
Simplified: He won the Academy award ( Oscar ) for Best actor in 2001 , for acting in Gladiator .