Task: Question Answering
Input (English): Passage: In 1955 in Portland, Oregon, a businessman finds his wife in bed with another man, and commits a double murder-suicide. His young son, Paul, witnesses the three deaths, and is traumatized. Twenty-five years later, in 1980, Paul is incarcerated at a psychiatric institution near Stanford Bay, a small town on the Oregon Coast. One day, Paul manages to murder an orderly, and subsequently retrieves a beloved wooden flute given to him by his father before escaping the institution.
Local teenager Marion is struggling to adjust to her disability—she survived a car accident several years prior, caused by her drunken father Frank, which left her unable to walk without the help of a leg brace. She is plagued by bizarre dreams, which she comes to discover are in fact premonitions; while in the hospital after her accident, she received a blood transfusion from Paul, which has given her extrasensory perception into Paul's actions. Marion's home life is troubled, with her father being verbally abusive to her and her mother, Bea, and she dreams of leaving Stanford Bay once her fisherman boyfriend, Joey, obtains a job in Portland.
Meanwhile, Paul hitchhikes with a truck driver whom he bludgeons to death with a hatchet, and then steals his vehicle. He subsequently picks up a female hitchhiker, who he brings to a local motel in Stanford Bay, and murders her after failing to charm her with his flute-playing. Marion's psychic visions of Paul's murders increase in frequency and intensity, and sh soon witnesses him in person disposing of a body on a rural beach, making her his next target. Marion manages to elude to Paul, but he later discovers where she lives, and infiltrates her home, killing Frank. Struggling to walk, Marion manages to flee her home to an adjacent sawmill, and is pursued by Paul. While chasing Marion, Paul impales a worker with a forklift, and then inadvertently crashes through a barrier, driving the forklift off the pier and into the bay. 
Question: What are the first names of the people who live in the house that Paul infiltrates?
Output (English): Bea.