Conversation so far:
When was Hrithik Roshan born?
Roshan was born on 10 January 1974.
Who are his parents?
His father, film director Rakesh Roshan, is the son of music director Roshanlal Nagrath; his mother, Pinky, is the daughter of producer and director J.
Om Prakash.
Does he have siblings?
CANNOTANSWER.
What is his ethnicity?
Bengali ancestry from his paternal grandmother's side.
What is an interesting fact about his early life?
Roshan felt isolated as a child; he was born with an extra thumb fused to the one on his right hand, which led some of his peers to avoid him.
Did he have the thumb  problem fixed?
CANNOTANSWER.

Question: When did he begin acting?
Self-contained rewrite: When did Hrithik Roshan begin acting?