a man in a blue sweater is talking to a gray headed lady.
A man and lady are talking.
IF the man is talking to a lady, then they are talking.
exists e1 e2 s1 x1 x2 x3 x4 x5.(to(e1,x3) & Time(e2,x5) & n_lady(x5) & Theme(e2,x4) & v_head(e2) & (x3 = x4) & n_gray(x3) & Actor(e1,x1) & v_talk(e1) & in(x1,x2) & n_sweater(x2) & a_blue(s1) & Theme(s1,x2) & n_man(x1))
exists e1 x1 x2 x3.(Actor(e1,x1) & v_talk(e1) & n_lady(x3) & n_man(x2) & subset_of(x3,x1) & subset_of(x2,x1))