Bird Feeder<br>Karen bought a bird feeder. She put it out right away. No birds ever came around. One night Karen noticed a big cat running around. She realized it had killed all the birds that got near.
One cat killed all the birds
There is no way to know if there were more cats
( z1 kill :ARG0 ( z2 cat :quant 1 ) :ARG1 ( z3 bird :mod ( z4 all ) ) )