Assertion: worm's system | /r/MadeOf | dorsal cerebral ganglion
Facets:
value: above the oesophagus
type: LOCATION
Source sentences:
text: The nervous system consists of a dorsal cerebral ganglion or brain above the oesophagus and a nerve ring around the oesophagus, which links the brain with the single ventral nerve cord that runs the length of the body.