A little boy in an apron helps his mother cook.
A woman is cooking.
"A woman is cooking" is a rephrasing of " mother cook"
exists e1 s1 x1 x2 x3 x4.(Theme(e1,x3) & Actor(e1,x1) & v_help(e1) & n_cook(x3) & of(x3,x4) & n_mother(x4) & of(x3,x1) & n_male(x1) & in(x1,x2) & n_apron(x2) & n_boy(x1) & a_little(s1) & Theme(s1,x1))
exists p1 x1.(exists x2.((x1 = x2) & n_cooking(x2)) & n_woman(x1))