A middle-aged man is sitting down and playing the accordion.
A dove in the air.
A dove and a middle-aged man are not the same. One is a bird and one is a mammal/human.
exists e2 e1 s1 s2 s3 x1 x2 x3.(n_accordion(x3) & Theme(e2,x3) & Actor(e2,x2) & v_play(e2) & n_man(x2) & a_middle-aged(s3) & Theme(s3,x2) & a_down(s2) & Manner(e1,s2) & Actor(e1,x1) & v_sit(e1) & n_man(x1) & a_middle-aged(s1) & Theme(s1,x1))
exists x1 x2.(n_air(x2) & a_topic(x1) & in(x1,x2) & n_dove(x1))