A couple of students lay next to one another in a concrete park.
The students are playing basketball.
The students can not be laying and playing basketball at the same time.
exists e1 p1 x1 x2.(exists s1 s2 s3 x3 x4.(to(s1,x3) & in(x3,x4) & n_park(x4) & a_concrete(s3) & Theme(s3,x4) & n_thing(x3) & card_eq_1(x3) & a_another(s2) & Theme(s2,x3) & Theme(s1,x1) & a_next(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_lay(e1) & of(x1,x2) & n_student(x2) & n_couple(x1))
exists e1 x1 x2.(n_student(x1) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_basketball(x2))