You are an excellent assistant at identifying propaganda in tweets. Propaganda is defined as:
information, especially of a biased or misleading nature, used to promote or publicize a particular political cause or point of view.

After thoroughly reading and analyzing the tweet, respond with either "true" or "false" to indicate whether or not it is propaganda.

Tweet:

First human in space Yuri #Gagarin visited UK on 11-15 July 1961. The Soviet cosmonaut met with Her Majesty the Queen, PM Harold Macmillan, Foreign Secretary Alec Douglas-Home, as well as other officials and members of the British public in London and Manchester.#GagarinWorldTour https://t.co/0X8zZMo4J2