context: The Fairy Queen, also known as the East Indian Railway Nr. 22,[1] is an 1855-built steam locomotive, restored by Loco Works Perambur, Chennai in 1997 and housed at the Rewari Railway Heritage Museum. It occasionally runs between New Delhi and Alwar.[2] In 1998 it was listed in the Guinness Book of Records as the world's oldest steam locomotive in regular service. The Fairy Queen runs on the same route as the Palace on Wheels, the tourist train launched in 1982, and in 1999 was awarded a National Tourism Award.
question: How old is the oldest operating steam locomotive?
answers.text: Fairy Queen Fairy Queen