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: "When was the defensive coordinator that replaced Jack Del Rio on Jacksonville Jaguars born?" whose answer is January 4, 1972.
Each document should contain about 30 words, and these documents should contain useful information.

Query: who replaced Jack Del Rio as defensive coordinator for Jacksonville Jaguars
Useful Output:

Doc 1: After three seasons and a 25-23 record, he was replaced by Jon Gruden and remained out of coaching for two years — until this week. Del Rio's
Doc 2: Del Rio, the former head coach of the Jacksonville Jaguars and Oakland Raiders, had joined Wisconsin's staff in August as a senior adviser
Doc 3: Del Rio will be replaced in the interim by defensive coordinator Mel Tucker. Tucker has done a nice job with the Jaguars defense this season
Doc 4: Jack Del Rio is now the Broncos' interim head coach/defensive coordinator. The Broncos announced the move Monday morning with Head Coach John Fox.
Doc 5: Mel Tucker was hired to former Jaguars' head coach Jack Del Rio's staff as defensive coordinator in 2009, after being replaced in Cleveland