The pencap<br>I needed a to write a song. I had nothing to write with. I looked in my desk for a pen. I only saw a pen cap. I threw the pen cap away.
the pen cap remained useful
surely someone could have found a use for it rather than throw it in the trash
( z1 remain :ARG1 ( z2 cap :mod ( z3 pen ) ) :ARG3 ( z4 useful :ARG1 z2 ) )