Assertion: penis's tissue | /r/CapableOf | expand both length-
Facets:
value: during an erection
type: TEMPORAL
Source sentences:
text: The “skin” of these balloons is the tunica albuginea, a tissue that expands both length- and width-wise during an erection, says Jacob Rajfer, M.D., professor of urology at the David Geffen School of Medicine at UCLA.