Question: What hypothesis about the Proto-Indo-Europeans is contradicted by the hypothesis first developed in 1987 by a British archaeologist?
Sentence (from "Colin Renfrew"): Andrew Colin Renfrew, Baron Renfrew of Kaimsthorn, FBA, FSA, Hon FSA Scot (born 25 July 1937 in Stockton-on-Tees) is a British archaeologist, paleolinguist and Conservative peer noted for his work on radiocarbon dating, the prehistory of languages, archaeogenetics, and the prevention of looting at archaeological sites.
Relevant evidence: No