Mouth Open<br>At night time, my mouth was falling open frequently. I purchased a mouth guard in the hopes it would help. In the middle of the night, I awoke with pain in my jaw. I tried changing position several times, to no avail. I finally removed the guard and gave up.
The person slept soundly through the night thanks to their mouth guard.
( z1 sleep :ARG0 ( z2 person ) :duration ( z3 night ) :manner ( z4 sound ) :ARG1-of ( z5 cause :ARG0 ( z6 guard :ARG0 z2 :ARG1 ( z7 mouth :part-of z2 ) ) ) )