The boy and girl are playing with arm floats on.
Two children wear water safety devices.
Arm floats are safety devices, and a boy and girl are children.
exists e1 s1 x1 x2 x3 x4 x5.(n_girl(x3) & n_boy(x2) & subset_of(x3,x1) & subset_of(x2,x1) & a_on(s1) & Manner(e1,s1) & with(e1,x4) & n_float(x4) & of(x4,x5) & n_arm(x5) & Actor(e1,x1) & v_play(e1))
exists e1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_device(x2) & of(x2,x4) & n_safety(x4) & of(x2,x3) & n_water(x3) & n_child(x1) & card_eq_2(x1))