Assertion: pulmonary circulation's vein | /r/HasProperty | involved in the gas exchange
Facets:
value: between the external environment
type: TRANSITIVE-OBJECT
value: through the lungs
type: MANNER
value: between the blood
type: OTHER
Source sentences:
text: Both pulmonary artery and pulmonary vein are involved in the gas exchange between the blood and the external environment through the lungs.