Hello! Please consider the following passage:
There are many problems with our public education system. (a) First, there is a problem of government funding for schools. (b) First, there is the problem of government funding for schools.
1. Are both variants appropriate there?
2. A bit of a theoretical question: The usually marks discourse-old information or topic/theme. Can a definite noun phrase after there is function as the comment/rheme of a sentence?