input: [0] Annelida [1] Closed system Aortic arches Dorsal and ventral blood vessels [2] Skin [3] Mouth,pharynx, esophagus, crop, gizzard, intestine, anus [4] Hermaphroditic [5] Nephridia 2 per segment [6] Ventral nerve cord with a small anterior brain [8] Longitudinal and circular 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