Assertion: penis | /r/CapableOf | enter the vagina
Facets:
value: as the foreskin
type: MANNER
value: without friction
type: MANNER
Source sentences:
text: Several authorities observe that the penis enters the vagina without friction as the foreskin unfolds.4 9 10 11 Taves (2002) reported that excision of the foreskin by circumcision increases the force required to penetrate by ten-fold.51 Shen et al. reported 43.1 percent of men cirumcised as adults experience difficult penetration.59