input: [0] Nematoda [1] None [2] None [3] Mouth,intestine, anus [4] Separate sexes [5] excretory tubules and excretory pore [6] Circular brain and several longitudinal nerve cords [8] Longitudinal muscles [7] 
output: None
options: S k e l e t a l
options: S p i c u l e s
options: N o n e
options: S o m e c o n t a i n s h e l l s
options: E x o s k e l e t o n m a d e o f c h i t i n