Original sentence: Joseph Greenberg argues that Lenca is a Macro-Chibchan language, in a group with Paya and the Misumalpan languages.Lyle Campbell lists it as unclassified
Edited sentence: Joseph Greenberg argues that Lenca is a Macro-Chibchan language, in a group with Paya and the Misumalpan languages, but Greenberg's classifications of indigenous languages of the Americas have been extremely controversial, and are rejected by most specialists.Lyle Campbell disagrees and lists it as unclassified