Assertion: penis's erection | /r/HasProperty | physiological phenomenon
Facets:
Source sentences:
text: An erection (clinically: penile erection or penile tumescence) is a physiological phenomenon in which the penis becomes firm, engorged, and enlarged.
text: Erection is a physiological phenomenon in which the penis becomes firm, engorged, and enlarged which facilitates coitus.
text: Clitoral erection is a physiological phenomenon where the clitoris becomes enlarged and firm.