Adjusting a tie for accuracy.
A man adjusts his tie
Although ties are usually worn by a man, there is nothing to specify the gender of the person adjusting their tie in Sentence 1.
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_adjust(e1) & for(x2,x3) & n_accuracy(x3) & n_tie(x2) & n_thing(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_adjust(e1) & n_tie(x2) & of(x2,x1) & n_male(x1) & n_man(x1))