Complex sentence: But Tolkien himself never made his languages complete enough for conversation; as a result, newly invented Elvish texts, such as dialogue written by David Salo for the movies directed by Peter Jackson, require conjecture and sometimes coinage of new words.
Split into simpler sentences: But Tolkien himself never made his languages complete enough for conversation. As a result, newly invented Elvish texts require conjecture and sometimes the coinage of new words.