Task: Question Answering
Input (English): Passage: On New Year's Eve 1938, lawyer Billy Cooper notices stranded English showgirl Jennie Carr gazing hungrily at other diners' plates and offers to buy her a meal. However, the restaurant is all out of food, so he invites her to his apartment. Before they arrive, Abel, another equally hungry and unemployed person, sneaks in for a chicken leg. Hearing them coming, he hides in a bedroom. When Jennie enters the room to remove her coat, he begs her not to cause trouble. She sympathizes with his plight and says nothing to Billy.
Just then, Hugo Brant, Billy's gangster employer, and his men barge in. They make Jennie leave. When Billy admits that he is quitting, Brant shoots him dead. To get rid of loose ends, Hugo sends Harrigan aboard the ocean liner bound for Southampton with Jennie. He frames Jennie for robbery.
Meanwhile, Abel, who was caught by the building watchman as he tried to sneak out, is tried and sentenced to death for Cooper's murder. The woman he insists can exonerate him is in HM Prison Holloway, unaware of his plight. Hugo and gang member Mortimer travel to England to deal with Jennie.
When Jennie gets out of prison, her mother introduces her to her new tenant, a priest named Mr. Mortimer. After reading in the newspaper about Abel's impending execution, she goes to Scotland Yard, despite Mortimer's warning that she might herself become a suspect. She finds that other women have turned up, all claiming to be the missing witness. Inspector Jim Grant is skeptical, and that turns into certainty when Mortimer shows up and totally discredits her. 
Question: What is the last name of the person whose apartment Abel breaks into?
Output (English): Cooper.