Assertion: hemoglobin | /r/HasProperty | essential
Facets:
value: to the human body
type: TRANSITIVE-OBJECT
value: for transferring oxygen
type: PURPOSE
Source sentences:
text: Hemoglobin is essential for transferring oxygen in your blood from the lungs to the tissues.
text: Hemoglobin is an essential protein to the human body as it transports oxygen to organs and tissues through the bloodstream ( Looker et al., 1992 ).