Three boys grab onto an inflatable donut in the water.
People are in the water.
Boys are people, which means people are in the water.
exists e1 s1 x1 x2 x3.(n_water(x3) & in(e1,x3) & onto(e1,x2) & n_donut(x2) & a_inflatable(s1) & Theme(s1,x2) & Actor(e1,x1) & v_grab(e1) & n_boy(x1) & card_eq_3(x1))
exists p1 x1 x2.(n_water(x2) & in(x1,x2) & n_people(x1))