Several people are praying in the square.
Several people are sleeping.
The people cannot be praying and sleeping at the same time
exists e1 s1 x1 x2.(n_square(x2) & in(e1,x2) & Actor(e1,x1) & v_pray(e1) & n_people(x1) & a_several(s1) & Theme(s1,x1))
exists e1 s1 x1.(Actor(e1,x1) & v_sleep(e1) & n_people(x1) & a_several(s1) & Theme(s1,x1))