Assertion: penis's erection | /r/Desires | cavern
Facets:
value: in humans
type: OTHER
value: to fill with blood
type: PURPOSE
value: in mice
type: OTHER
value: in the penis
type: LOCATION
Source sentences:
text: In mice, just like humans, an erection requires the caverns in the penis to fill with blood.
text: In mice, just as in humans, an erection requires the caverns in the penis to fill with blood.