Task: Question Generation
Input (English): Passage: In a small Texas town, John Kirby, a mentally ill man, kills two members of the family with whom he was staying. Sheriff Daniel "Dan" Stevens and his deputy Charlie, respond and eventually arrest John, but he breaks out of the handcuffs, overpowers the other officers and grabs one of their revolvers, forcing the officers to open fire and shoot John.  
Severely injured and near death, John is transported to an institute where his psychiatrist, Thomas "Tom" Halman, works along with Dr. Phillip Spires and Dr. Paul Vaughn, two doctors and geneticists. To save John, Phillip proposes treating him with a formula created by himself and Paul to enhance cellular strength and regeneration. Tom objects to its use due to John's psychosis, and Phillip pretends to agree but later administers the formula anyway once Tom leaves. Revived and rendered nearly mute but virtually invulnerable, John escapes from the institute and tracks Tom to his home, having overhead Tom telling Phillip to allow John to die earlier. Meanwhile, Dan invites Tom's sister Alison, whom is he romancing, on a trip. John breaks into Tom's home and the two fight. Despite shooting John several times and pushing him down a flight of stairs, Tom is killed. Tom's wife Nancy finds her husband's body and is killed by John as well. Alison arrives to pick up her gear for the trip and discovers her brother and sister-in-law's corpses, but John flees as Dan and Charlie arrive with the police.
Output (English): What are the first names of the sheriff and deputy that initally arrest John?