Conversation so far:
When did Rocky Graziano begin his professional career?
As he grew older and seeing no other way to raise his standard of living, Rocky Graziano signed a few boxing contracts.
Did Rocky Graziano have a professional boxing career?
Rocky Graziano signed a few boxing contracts, but the rigors of training disinterested him.

Question: How many championships did he win?
Self-contained rewrite: How many championships did Rocky Graziano win?