A group of people are backpacking through a grassy field.
The group of people are running from bulls.
The group of people cannot be backpacking through a grassy field and running from the bulls at the same time.
exists e1 s1 x1 x2 x3.(through(e1,x3) & n_field(x3) & a_grassy(s1) & Theme(s1,x3) & Actor(e1,x1) & v_backpack(e1) & of(x1,x2) & n_people(x2) & n_group(x1))
exists e1 x1 x2 x3.(n_group(x1) & from(e1,x3) & n_bull(x3) & Actor(e1,x1) & v_run(e1) & of(x1,x2) & n_people(x2))