Teacher:In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.
Teacher: Now, understand the problem? Solve this instance: Copyright 2018 Nexstar Broadcasting, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed. 
  
 (SHELBY COUNTY D.A. NEWS RELEASE) - A 67-year-old man whose dentures were found at the scene of a sexual assault 16 years ago pled guilty to rape charges Monday and was sentenced to eight years in prison, said Shelby County Dist. Atty. Amy Weirich. 
  
 Thomas Maupin’s dentures were made while he was serving a prison sentence for the 1988 murder of a 6-year-old girl in Washington State. His name also was imprinted in the dentures. 
  
 The dentures were collected and tagged by crime scene investigators and placed in the police property room. A sexual assault kit including DNA evidence also was collected, but became part of a backlog that was not tested until many years later. 
  
 In July of 2016, the dentures were taken to the Tennessee Bureau of Investigation for testing, and a partial DNA profile was developed that showed to be consistent with that of Maupin. 
  
 He entered his guilty plea before Criminal Court Judge Lee Coffee. The victim, who remains emotionally traumatized by the case, did not want to testify in a trial, and approved the settlement. 
  
 The rape occurred Aug. 19, 2001, when a 31-year-old woman walking in the 1200 block of Thomas Street north of Frayser Boulevard was approached by a motorist who got out of his car and began walking with her. 
  
 After a few moments, the man forced her into an alley and stabbed her with a metal object under her chin with such force that it struck the roof of her mouth. He also used the object to sexually assault her after forcing her to perform oral sex. 
  
 Maupin came to Memphis after serving 12 years in Washington for killing a young girl in Spokane, Wash. He was twice convicted and sentenced to 40 years in prison, but the convictions were overturned on appeal. 
  
 The Memphis rape case was handled by Asst. Dist. Atty. Abby Wallace who has been a member of the DA’s Special Victims Unit which prosecutes cases of child sexual abuse and severe physical abuse of child victims; rape and aggravated rape of adult victims, and abuse of elderly and vulnerable adults. ||||| CLOSE Memphis Crime Stoppers allows people to anonymously submit tips to crimes they may have witnessed. Here are several ways you can submit a tip to Crime Stoppers. Wochit 
  
 Thomas Maupin (Photo: Shelby County) 
  
 A 67-year-old man pleaded guilty this week to raping a woman in 2001 after a DNA profile was developed years later from dentures left at the scene. 
  
 Thomas Maupin pleaded to raping the 31-year-old woman on August 19, 2001 in the 1200 block of Thomas Street. Shelby County Criminal Court Judge Lee Coffee sentenced him to eight years in a plea agreement. 
  
 Investigators recovered Maupin's dentures, imprinted with his name, and the woman's sexual assault kit became part of an accumulation of untested kits. 
  
 The dentures were taken to the Tennessee Bureau of Investigation in July 2016, and a partial DNA profile "showed to be consistent with that of Maupin," the office of the Shelby County District Attorney General said. 
  
 Maupin was previously convicted twice of killing 6-year-old Tricna Cloy in 1988 in Washington State, but the convictions were thrown out, said attorney Juni Ganguli. Maupin pleaded to a lesser charge and was subsequently freed. 
  
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Student:
While in prison for a murder for which he was twice convicted and later acquitted, Thomas Maupin had a set of dentures made. Years later, that set would become a key piece of evidence helping to put him behind bars again. According to Shelby County District Attorney Amy Weirich, dentures bearing Maupin's name were found at the scene of a rape in Memphis, Tenn., on Aug. 19, 2001. But for 15 years, they went untested due to a department backlog, reports the Commercial Appeal. Only in 2016, when a partial DNA profile was developed from the dentures and found "to be consistent with that of Maupin," was he finally arrested, according to a release. Twice convicted of the 1988 murder of 6-year-old Tricna Cloy in Spokane, Wash., Maupin served 12 years in prison before his convictions were overturned; he then traveled to Memphis. On Aug. 19, 2001, he began walking alongside a 31-year-old woman, per the release. Maupin then forced the woman into an alley, where he stabbed her under the chin with a metal object that went all the way up to the roof of her mouth. He also used the object to rape the woman after forcing her to perform oral sex. Now 67, Maupin pleaded guilty to rape charges on Monday and was sentenced to eight years in prison.