Woman with hand to her mouth and a man talking.
A woman talks while she chews, but covers her mouth to be polite.
A woman covering her mouth does not necessarily mean she "talks while she chews." The man talking does not necessarily imply the woman is also talking.
exists e1 s1 x1 x2 x3 x4 x5.(ne_nam_woman(x1) & a_topic(s1) & subset_of(x4,s1) & Actor(e1,x5) & v_talk(e1) & (x4 = x5) & n_man(x4) & subset_of(x1,s1) & with(x1,x2) & to(x2,x3) & n_mouth(x3) & of(x3,x2) & n_female(x2) & n_hand(x2))
exists e1 p1 p2 s1 x1 x2 x3.(exists e2.(Actor(e2,x1) & v_chew(e2)) & n_female(x1) & n_female(x1) & while(e1,p2) & a_but(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x1) & v_cover(e1) & Topic(x3,p1) & exists s2.(Theme(s2,x3) & a_polite(s2)) & n_mouth(x3) & of(x3,x1) & n_talk(x1) & of(x1,x2) & n_woman(x2))