A child is sitting on some rocks outside.
The child is running up a grassy hill.
The action of sitting and running can't occur at the same time
exists e1 s1 x1 x2.(a_outside(s1) & Manner(e1,s1) & on(e1,x2) & n_rock(x2) & Actor(e1,x1) & v_sit(e1) & n_child(x1))
exists e1 s1 s2 x1 x2.(n_child(x1) & a_up(s2) & Manner(e1,s2) & Theme(e1,x2) & Actor(e1,x1) & v_run(e1) & n_hill(x2) & a_grassy(s1) & Theme(s1,x2))