There are two kinds of NPs existential and definite. Sometimes NP that we would expect to be existential behave as they are actually definite. One example of such NPs are those that are kind-denoting.
ex: The snake is a cold blood animal. The rose is a flower.
These sentences have general meaning and we would expect them to have existential meaning and take indefinite article. However, they take definite article and have definite meaning.
Could any one give examples of relative clauses that have kind-denoting meaning and are definite or is there any articles on this topic?