The girl is an excellent singer. In this sentence singer/girl/excellent is a predicate noun/adjective

the girl is the predicate

Explanation:

it is the girl because without the word sing the phrase or sentence is senseless

squash

explanation:

samuel gompers was an extremely important person in the american labor movement, being him an employee all his life he devoted himself to fight for the rights of his pairs, he believed they all had the right to have better thing and that they all were working for them but the factory workers were greedy, ambitions and socialist people for him who he didn't have a good concept of.

he gave so many speeches and led so many strikes and protest to fight for equality which he considered employers didn't want to accept, so he had an absolutely negative opinion of them.