Task: Question Answering
Input (English): Passage: Lois Conway works as a music teacher at a local high school in a small town, where recently a woman was found murdered. When she starts receiving notes from an anonymous admirer, she suspects her favorite student Sandy is responsible, and tells him they could never be lovers. The notes grow more violent and when, in her latest letter, she is invited to meet at the school's lockers at night, Lois decides to visit, hoping to stop the young man. There, she is attacked by an initial shadowy figure, whom she later identifies as Leonard Bennett, the high school's star football player.
She successfully gets away, though drops her purse, and is aided by Lieutenant Harry Graham. Graham advises her to press charges, but Lois wants to drop the matter in hopes of it blowing over.
Back at home, she notices her purse on her table, and aware that the thief is in her home, orders him to leave. As he bashes through the door to get away, Lois is now certain that Leonard is her attacker.
Leonard is able to get home without his dominant and overbearing father noticing he is gone. Mr. Bennett lectures his son on the dangers of women, stimulated by the occurrence of him being left by his wife and Leonard's mother when he was very ill.
The following day, Lois reports the incident to the principal Pendleton, but when Leonard denies the whole matter, Pendleton protects the school's most valuable athletic asset by suggesting to Lois that she should provide evidence.
Soon the story spreads around school, and with gossip surrounding Lois allegedly pursuing Leonard, both her personal and professional life becomes a mess. One day, she pulls him out of class and tries to reason with him, but he refuses to listen to her. Meanwhile, she grows closer to Graham, who does not understand why she is sympathetic to Leonard. 
Question: Who was left by their wife when they were very ill?
Output (English): Mr. Bennett.