Neat idea, but something is off in the classification --- almost everything is male biased even in the most simple of cases... eg "The cat walks up the tree"
Same with "The rain in Spain falls mainly on the plain".
As well as "The reindeer in Spain was hit mainly by the plane", although I would at least expect that one.
Even "I sat."
Do you know why? I also wonder this. I think I followed the paper correctly. My theory is that maybe there's a default male bias in the English languge?