Assertion: cyanobacteria | /r/CapableOf | give off oxygen
Facets:
value: as a byproduct
type: MANNER
Source sentences:
text: They are thought to be the second organisms in existence, because they give off oxygen as a byproduct.
text: They are thought to be the second organisms in existence, because they give off oxygen as a byproduct.
text: They are thought to be the second organisms in existence, because they give off oxygen as a byproduct.