A boy jumped off a wooden structure onto a floatation device on the water.
A guy sat down
One cannot be jumping and sitting down simultaneously
exists e1 s1 s2 x1 x2 x3 x4 x5.(n_water(x5) & on(e1,x5) & onto(e1,x3) & n_device(x3) & of(x3,x4) & n_floatation(x4) & a_off(s2) & Manner(e1,s2) & Theme(e1,x2) & Actor(e1,x1) & v_jump(e1) & n_structure(x2) & a_wooden(s1) & Theme(s1,x2) & n_boy(x1))
exists e1 s1 x1.(a_down(s1) & Manner(e1,s1) & Actor(e1,x1) & v_sit(e1) & n_guy(x1))