A family prepares to ride on the water.
The family is going to ride the water.
ride on the water is a rephrasing of ride on the water
exists e1 p1 x1 x2.(n_water(x2) & Topic(e1,p1) & Actor(e1,x1) & v_prepare(e1) & exists e2.(on(e2,x2) & Actor(e2,x1) & v_ride(e2)) & n_family(x1))
exists e1 p1 x1 x2.(n_water(x2) & n_family(x1) & Topic(e1,p1) & Actor(e1,x1) & v_go(e1) & exists e2.(Theme(e2,x2) & Actor(e2,x1) & v_ride(e2)))