title: G4S
context: It is the world's largest security company measured by revenues and has operations in more than 90 countries.[5] With over 570,000 employees,[6] it is the world's third-largest private employer, the largest European and African private employer, and among the largest on the London Stock Exchange.[7][8] G4S was founded in 2004 by the merger of the UK-based Securicor plc with the Denmark-based Group 4 Falck.
question: How many people are employed by the company G4S?
answers: over 570,000