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:

Happy May 3rd Constitution Day! The Polish constitution was the first constitution of its kind in Europe and second in the world after the United States Constitution!  Poland and the U.S. have always shared common values and history. Today our relationship is stronger than ever.