Assertion: detergent's surfactant | /r/HasProperty | complex occurring substance
Facets:
value: naturally
type: MANNER
Source sentences:
text: Surfactant is a complex naturally occurring substance made of six lipids (fats) and four proteins that is produced in the lungs.
text: Surfactant is a complex naturally occurring substance made of six lipids (fats) and four proteins that is produced in the lungs.