An older man and women having dinner
An older man and women having their 30th anniversary dinner together.
The first sentence doesn't imply that the reason for the dinner is for a 30th anniversary.
exists e1 s1 s2 x1 x2 x3 x4.(a_topic(s1) & subset_of(x2,s1) & Theme(e1,x4) & Actor(e1,x3) & v_have(e1) & n_dinner(x4) & (x2 = x3) & n_woman(x2) & subset_of(x1,s1) & n_man(x1) & r_more(s2) & a_older(s2) & Theme(s2,x1))
exists e1 s1 s2 s3 x1 x2 x3 x4 x5.(a_topic(s1) & subset_of(x2,s1) & Theme(e1,x4) & Actor(e1,x3) & v_have(e1) & r_together(x4) & n_dinner(x4) & of(x4,x5) & n_anniversary(x5) & a_30th(s3) & Theme(s3,x4) & of(x4,x1) & n_thing(x1) & (x2 = x3) & n_woman(x2) & subset_of(x1,s1) & n_man(x1) & r_more(s2) & a_older(s2) & Theme(s2,x1))