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:

Prominent Soviet cosmonaut &amp; rocket engineer, two times Hero of the Soviet Union, a man who made a vast contribution in #SpaceExploration, Georgy Grechko would’ve turned 89 today. He was born #OTD in 1931. #InLovingMemory https://t.co/hlZzh6lDYR