A dog barks at plants in a walled concrete courtyard.
A dog is swimming in a lake
The dog cannot bark and be swimming.
exists s1 x1 x2 x3 x4 x5.(a_topic(x1) & at(x1,x3) & in(x3,x4) & n_courtyard(x4) & of(x4,x5) & n_concrete(x5) & a_walled(s1) & Theme(s1,x4) & n_plant(x3) & n_bark(x1) & of(x1,x2) & n_dog(x2))
exists e1 x1 x2.(in(e1,x2) & n_lake(x2) & Actor(e1,x1) & v_swim(e1) & n_dog(x1))