premise: I think this lady is waiting for a cab.
hypothesis: The lady is taking a nap.
explanation_1: One would not wait for a cab by taking a nap. She would have to be doing one or the other.
explanation_2: Although the lady could take a nap while waiting for a cab the two actions are not the same
explanation_3: The lady cannot be waiting and taking a nap at the same time.
premise_logic: exists e1 p1 x1 x2.(n_lady(x2) & n_person(x1) & exists e2 x3.(for(e2,x3) & n_cab(x3) & Actor(e2,x2) & v_wait(e2)) & Topic(e1,p1) & Actor(e1,x1) & v_think(e1))
hypothesis_logic: exists e1 x1 x2.(n_lady(x1) & Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & n_nap(x2))