Task: Text Categorization
Input (English): The drug mebendazole is used to treat diseases caused by members of this phylum, such as trichuriasis and ascariasis. These organisms use chitinous spicules during reproduction and are sheathed in a hard protein cuticle. These organisms possess a pseudocoelom and are one of the simplest animals that have a two-way digestive system. Sydney Brenner extensively used one member of this phylum, (*) C. elegans, as a model organism. Many members of this phylum are parasitic helminths, such as hookworms and pinworms. For ten points, name this phylum of nonsegmented roundworms.
Output (English): Science