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 author needed to find a pen to create his musical piece. 
( z1 need :ARG0 ( z2 person :ARG0-of ( z3 author ) ) :ARG1 ( z4 find :ARG0 z2 :ARG1 ( z5 pen ) :purpose ( z6 create :ARG0 z2 :ARG1 ( z7 piece :mod ( z8 music ) :poss z2 ) ) ) )