Complex sentence: In retaliation for the hundreds of dollars Joseph's boxing loss has cost Boss Kelly and his friends, Joseph is thrown out into the street outside the club and he meets a policeman who shows him a picture of Shannon asking if he's seen her.
Split into simpler sentences: In retaliation for the hundreds of dollars Joseph's boxing loss has cost Boss Kelly and his friends, Joseph is thrown out into the street outside the club. He meets a policeman who shows him a photograph of Shannon, asking if he's seen her.