Complex sentence: Edward J. Kloczko (born in Lviv in 1963) is a French linguist who has worked and published several books in French and English on the constructed languages of J. R. R. Tolkien.
Split into simpler sentences: Edward J. Kloczko (born in Lviv in 1963) is a French linguist. He has worked with and published on the constructed languages of J. R. R. Tolkien.