A small girl is covering her mouth.
A small females has her hands over her mouth.
Girl is a synonym for females and she has her hands over her mouth so she must be covering her mouth.
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_cover(e1) & n_mouth(x2) & of(x2,x1) & n_female(x1) & n_girl(x1) & a_small(s1) & Theme(s1,x1))
exists e1 s1 x1 x2 x3.(over(e1,x3) & n_mouth(x3) & of(x3,x1) & n_female(x1) & n_female(x1) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_hand(x2) & of(x2,x1) & n_female(x1) & a_small(s1) & Theme(s1,x1))