Original sentence: Biochemist Michael Behe, another member of "The Wedge", contributed the argument that he subsequently called "irreducible complexity" (IC) to the second edition of Pandas in 1993.The textbook contained concepts which Dembski later elaborated in his treatment of "specified complexity" (SC)
Edited sentence: Biochemist Michael Behe, another member of "The Wedge", contributed the argument which he subsequently called "irreducible complexity" (IC) to the second edition of Pandas in 1993.The textbook already contained concepts which Dembski elaborated into his doctrine of "specified complexity" (SC) as a supporting element