A target body sitting on the side of an indentation would stay in place, with no tendency to roll downhill, unless there were already a force such as gravity underneath the rubber sheet pulling everything downhill.
(A target body; sitting; on the side of an indentation) (A target body sitting on the side of an indentation; would stay; in place) (the rubber sheet; pulling; everything; downhill)
A target body A target body sitting on the side of an indentation the rubber sheet
sitting would stay pulling
on the side of an indentation
in place
everything downhill