You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "how old was damian wayne when he became robin?" whose answer is ten.
Each document should contain about 30 words, and these documents should contain useful information.

Query: damian wayne age when he became robin
Useful Output:

Doc 1: After the events of Batman R.I.P. and Batman: Battle for the Cowl, he takes up the identity of Robin at ten years of age.  Robin reveals that
Doc 2: Damian has a strong love for animals. He has a pet dog which he has named Titus and is in the process of training the dog to be his Bat-Hound.
Doc 3: This week, we're talking about Damian Wayne, the biological son of Batman and the fifth person in the DCU to take the name Robin.
Doc 4: The Boy Wonder previously starred in his own ongoing Robin: Son of Batman and led the Teen Titans. Yet this feels different. Although Robin was
Doc 5: Tim became Red Robin when he was 18 and Damian Wayne became Robin when he was 10; Bruce would be 41. Damian Wayne, the current Robin, is