The Tall Fall<br>Mike was with his friends on a hike. They were goofing around as they climbed on big boulders. Suddenly Mike slipped and fell from a boulder. It was high enough that Mike was completely out of breath. Luckily his injuries were only minor.
Mike intentionally threw himself off the boulder. 
The context mentions information such as "they were goofing around" and "Mike slipped and fell", which means any rational person would assume his fall was accidental - therefore, my statement is definitely incorrect as it implies it was deliberate. I think the system had difficulty because it gives too much weight to what may be possible, and does not account for irrational statements. 
( z1 throw :ARG0 ( z2 person :name ( z3 name :op "Mike" ) ) :ARG1 z2 :source ( z4 boulder ) :ARG1-of ( z5 intend :ARG0 z2 ) )