Detailed Instructions: In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.
Q: Passage: At a bar, Deb Clarington, a camera operator for the local  news, sees an attractive man, Ryan Waverly.  Although initially too insecure to approach him, her friend Ruby talks her into it.  While awkwardly hitting on him, Deb is interrupted by Ryan's fiance, who breaks up with him when he refuses to accept a high-paying job at his father's company.  The next thing Deb knows, she wakes in Ryan's bed with a hangover.  Ryan asks her to leave, and after several attempts to seduce him, she reluctantly agrees, seeing people attack and cannibalize each other.  Deb saves Ryan from a zombie attack, and they return to his apartment.
Deb once again attempts to seduce Ryan, who is more concerned with checking on his family and ex-fiancee.  Since he has no car, Deb agrees to help him.  They first visit his elderly neighbor for supplies.  Finding her apparently dead, they bicker over arrangements, only to be surprised when she rises as a zombie.  After they kill her, Deb drops the supplies, alerting many zombies.  The two flee to her car, agreeing that they will not stop until they reach Ryan's family.  Along the way, Deb eagerly rams several zombies; Ryan objects, saying they may be treatable.  Although skeptical of his idealistic optimism, Deb agrees not to unnecessarily kill them.
Despite their earlier agreement, Deb takes a detour to visit to Ruby, who is now a zombie.  Convinced the zombies may be treatable, Deb traps Ruby in the car's trunk.  At Ryan's father's mansion, the two meet Chaz, Ryan's brother, who quizzes them on whether they are zombies before allowing them in.  Ryan is reunited with Stacy, and Ryan's father, Frank, reveals that his water treatment plant spread the zombie virus to the town.  When Deb pushes for more information, he blames the mayor for pushing an environmentally dangerous project, to Ryan's disgust.
A:
Who owned the  treatment plant that spread the zombie virus?