Question: How many people does the stadium that housed the 2007 Rhein Fire hold?
Sentence (from "Esprit Arena"): Esprit Arena (stylized as ESPRIT arena), known previously as the "LTU Arena" (until June 2009), and as the "Düsseldorf Arena" (during the 2011 Eurovision Song Contest), is a multi-functional football stadium in Düsseldorf, Germany.
Relevant evidence: No