prompt: What theory is De Witt Lee Sumners known for his research? Use the text attached to give me the answer.
  
  De Witt Lee Sumners is an American mathematician, having been the Robert O. Lawton Distinguished Professor at Florida State University.[1][2] He is known for his research in knot theory, topological fluid dynamics, and their application to DNA.[3]
  
  Sumners earned his Ph.D. in 1967 from the University of Cambridge under the supervision of John F. P. Hudson.[4] He retired in 2007, and became a professor emeritus. In 2012, he was named as one of the inaugural Fellows of the American Mathematical Society.[5]
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chosen.content: A chat.
chosen.role: user
chosen.content: What theory is De Witt Lee Sumners known for his research? Use the text attached to give me the answer.
  
  De Witt Lee Sumners is an American mathematician, having been the Robert O. Lawton Distinguished Professor at Florida State University.[1][2] He is known for his research in knot theory, topological fluid dynamics, and their application to DNA.[3]
  
  Sumners earned his Ph.D. in 1967 from the University of Cambridge under the supervision of John F. P. Hudson.[4] He retired in 2007, and became a professor emeritus. In 2012, he was named as one of the inaugural Fellows of the American Mathematical Society.[5]
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chosen.content: De Witt Le Sumners is known for researching knot theory and topological fluid dynamics and their application to DNA.
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rejected.content: A chat.
rejected.role: user
rejected.content: What theory is De Witt Lee Sumners known for his research? Use the text attached to give me the answer.
  
  De Witt Lee Sumners is an American mathematician, having been the Robert O. Lawton Distinguished Professor at Florida State University.[1][2] He is known for his research in knot theory, topological fluid dynamics, and their application to DNA.[3]
  
  Sumners earned his Ph.D. in 1967 from the University of Cambridge under the supervision of John F. P. Hudson.[4] He retired in 2007, and became a professor emeritus. In 2012, he was named as one of the inaugural Fellows of the American Mathematical Society.[5]
rejected.role: assistant