A man wakeboards in the water.
A man is having fun in the water.
Wakeboarding does not imply having fun.
exists x1 x2 x3.(n_water(x3) & a_topic(x1) & in(x1,x3) & n_wakeboard(x1) & of(x1,x2) & n_man(x2))
exists e1 x1 x2 x3.(n_water(x3) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_fun(x2) & n_man(x1))