Vicar's Dogs Understand Different Languages

Reverend Graham Sims, a multilingual clergyman, trains his sheepdogs to understand commands in various languages such as German, Arabic, Welsh, and French. During a sheepdog trial, he decided to try something unique by giving commands in different languages, which allowed each dog to obey individually. For amusement, he also trained them to react to the American National Anthem. One dog even understands multiple languages. Reverend Sims continues to study more languages to pass on to future sheepdogs.

What languages does Reverend Graham Sims' sheepdogs understand?

What was the reaction of the lady at the sheepdog trial when she saw Reverend Graham Sims perform?

Describe the unique training method Reverend Graham Sims used for his dogs.

What special behavior did Reverend Graham Sims train his dogs to exhibit when they hear the American National anthem?

What is Reverend Graham Sims studying to pass on to future sheepdogs?