DS has some homework in which he has to decide if a particular word in a sentence is a verb, noun, adverb, adjective, pronoun or determiner. There is room for only one written answer. In the sentence:
The recipe for beef pie calls for fourteen onions.
Is fourteen an adjective or a determiner? He (and I) thought it was both, but he is concerned that there is no space to write this. FYI he hates breaking rules, so writing outside the given box would annoy him.