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:

👨‍🚀 Russian-Soviet cosmonaut Valery #Polyakov turns 7⃣8⃣ today! He is one of 4 people to have both Hero of the Soviet Union &amp; Hero of 🇷🇺 Russia titles. His world record on the longest time continuously spent in space - 437 days on #Mir station - still holds. Many happy returns! https://t.co/6L2cMyR91H