Question: The feudal barons of Les Baux put the star of the Nativity on their coat of arms, claiming to be descendants of Balthazar, one of the Three Wise Men.
The star of the Nativity has been on a coat of arms.

Answer: yes

Question: The members of the Exotic Poultry Producers Association drank excellent unusual alcoholic drinks, played exclusive unusual games, met famous unusual people, and had unusual rarely seen personal preferences.
Unique drinks were served while people played unique games.

Answer: yes

Question: For example, to demonstrate the product was ready for production, critical processes had to be in control and testing should have demonstrated the product reliability.
The demonstration was supposed to indicate the product reliability.

Answer:
yes