Definition: In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.
Input: Question: The genus Anisakis is a: 
 Options:  <1> Digestive trematode. <2> Monogenetic trematode. <3> Nematode <4> Platelminto. <5> Arthropod.
