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.
If the person does not write a song, he won't eat.
( z1 eat :polarity - :ARG0 ( z2 person ) :condition ( z3 write :polarity - :ARG0 z2 :ARG1 ( z4 song ) ) )