A little boy wearing swim trunks plays in the ocean.
A boy in swim trunks plays in the ocean while his sister tries to surf.
Not all little boy wearing swim trunks plays in the ocean plays in the ocean while his sister tries to surf.
exists e1 e2 s1 x1 x2 x3 x4 x5.(n_ocean(x5) & in(e2,x5) & Actor(e2,x1) & v_play(e2) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_trunk(x3) & of(x3,x4) & n_swim(x4) & (x1 = x2) & n_boy(x1) & a_little(s1) & Theme(s1,x1))
exists e1 p1 x1 x2 x3 x4 x5.(n_sister(x5) & of(x5,x4) & n_male(x4) & n_ocean(x4) & exists e2 p2.(Topic(e2,p2) & Actor(e2,x5) & v_try(e2) & exists e3.(Actor(e3,x5) & v_surf(e3))) & while(e1,p1) & in(e1,x4) & Actor(e1,x1) & v_play(e1) & in(x1,x2) & n_trunk(x2) & of(x2,x3) & n_swim(x3) & n_boy(x1))