Girl in hallway vacuuming
Dogs joust.
Every concept conveyed by a girl in hallway vacuuming doesn't even remotely relate to the idea that dogs joust, therefore 100% contradictory.
exists e1 s1 x1 x2.(ne_nam_girl(s1) & a_topic(s1) & in(s1,x1) & Actor(e1,x2) & v_vacuum(e1) & (x1 = x2) & n_hallway(x1))
exists s1 x1 x2.(n_joust(x1) & a_.(s1) & Theme(s1,x1) & (x1 = x2) & ne_nam_dogs(x2) & a_topic(x1))