Property-path could use also concept/witness LATs as features

[pasky]

Our property-path feature set now looks like e.g. this (for "Who played Marge Simpson in The Simpsons?"):

sv=played, lat=person (and some expansions)

and the labels are

sports.sports_team.arena_stadium
film.film.starring → film.performance.actor

etc. But what if we also looked at LAT of Marge Simpson and The Simpsons (as concept and witness, or vice versa) and added the expanded LAT as extra features? We should be able to distinguish between sports and movies!