Question: Where is the brewery that gives its name to the racecourse which Silver Birch won in April 2007?
Sentence (from "Silver Birch (horse)"): Ridden by Robbie Power and trained by 29-year-old Gordon Elliott, Silver Birch was the winner of the 2007 John Smith's Grand National at Aintree Racecourse, run on Saturday 14 April 2007.
Relevant evidence: Yes