Assertion: cowpea | /r/CapableOf | fix its own nitrogen
Facets:
value: as a legume
type: MANNER
value: from the air
type: TRANSITIVE-OBJECT
Source sentences:
text: Cowpea fixes its own nitrogen and does not need nitrogen-based fertilizer.
text: However, cowpea does not require too much nitrogen fertilizer because it fixes its own nitrogen from the air using the nodules in its roots.
text: As a legume, cowpea fixes its own nitrogen, and does not need nitrogen fertilizer.
text: As a legume, cowpea fixes its own nitrogen and thus does not need nitrogen fertilizer.
text: As a legume, cowpea fixes its own nitrogen, and does not need nitrogen ferti­liser.