Assertion: caterpillar | /r/HasAspect | gland
Facets:
value: at the back of their heads
type: LOCATION
Source sentences:
text: The caterpillars have a gland at the back of their heads that releases bad-smelling chemicals to stop predators from eating them.
text: The caterpillars have a gland which secretes honeydew when the ants massage them.