Yes the people who acted out in William Shakespeare's plays were trained.

who trained bruce lee? Where have you Trained?

no because alot of people have trained gerbils to do things. not alot of people trained rats.

Yes ravens can be trained to follow people and if a raven just follow you than they have a relationship with you.

A triage nurse is trained to sort injured people into groups based on their need for immediate medical treatment. They are trained to sort these people very quickly in times of emergencies.