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: "who is the lead singer for iron maiden?" whose answer is Bruce Dickinson.
Each document should contain about 30 words, and these documents should contain useful information.

Query: current lead singer of iron maiden
Useful Output:

Doc 1: No. The original singer was a guy called Paul Day. He never recorded with them and was sacked for a lack of charisma.
Doc 2: Iron Maiden are bassist Steve Harris, guitarist Dave Murray, guitarist Adrian Smith, vocalist Bruce Dickinson, drummer Nicko McBrain and guitarist Janick Gers.
Doc 3: Iron Maiden have now revealed that drummer Simon Dawson will take on the role of drummer for the band moving forward.
Doc 4: Iron Maiden lead singer, Bruce Dickinson is considered a polymath by Intelligent Life magazine due to excelling in a wide variety of pursuits.
Doc 5: But Iron Maiden's membership troubles weren't over yet, oh no! Now it was singer Paul Di'Anno's turn to rock the group's tightly run ship, as