Assertion: bruise's color | /r/HasProperty | due
Facets:
value: to a transition metal compound
type: CAUSE
Source sentences:
text: The green color is due to the presence of a hemoglobin breakdown product called biliverdin.
text: The green color is due to the presence of a hemoglobin breakdown product called biliverdin.
text: It is proposed that the blue color is due to a transition metal compound (probably a copper compound) comprising a psilocin derivative.