Assertion list for term "difficult to open".

Results from Ascent++: 5
bottle ReceivesActiondifficult to open 0.42
sign ReceivesActiondifficult to open 0.33
hatch ReceivesActiondifficult to open 0.25
eyelid ReceivesActiondifficult to open 0.24
latch ReceivesActiondifficult to open 0.23