The police, (a)   were called by the manager, arrived a few minutes later.

The car (a)   the thieves were using was stolen.

Now please translate and use a relative pronoun:

Das ist der Hund, den ich dir gezeigt habe.

(a)  

Make your own sentence and use a relative pronoun:

The band- we heard- yesterday- was-good

(a)  

people- enjoy- jazz music- often-don't like- rock music.

(a)