Assertion: melanin | /r/HasProperty | catechol melanins
Facets:
value: sometimes
type: TEMPORAL
Source sentences:
text: Melanin produced by plants are sometimes referred to as 'catechol melanins' as they can yield catechol on alkali fusion.
text: Melanin produced by plants are sometimes referred to as 'catechol melanins' as they can yield catechol on alkali fusion.