Three individuals are scuba diving.
three people are in the water.
three people are in the water are doing scuba diving.
exists p1 x1.(exists s1 x2.((x1 = x2) & n_diving(x2) & a_scuba(s1) & Theme(s1,x2)) & n_individual(x1) & card_eq_3(x1))
exists p1 x1 x2.(n_water(x2) & in(x1,x2) & n_people(x1) & card_eq_3(x1))