What is the fine-grained topic of the following text: This phenomenon is known as ‘modal ellipsis’ and, in the past ten years, its syntactic status has been hotly debated in the literature on Romance syntax in ways reminiscent of the controversy surrounding the proper syntactic treatment of English VP ellipsis and Sluicing that started with the early works of Ross (1967) and Sag (1976). Only return the topic.
The syntactic status of Modal Ellipsis in Romance syntax.