A couple are kissing, as people wait on the street, near a purple glowing building in the background.
A couple is kissing because it's their anniversary.
The fact that a couple are kissing doesn't imply that it's their anniversary.
exists e1 e2 p1 x1 x2 x3 x4 x7.(n_background(x7) & n_street(x4) & exists e4 e3 x5 x6.(on(e3,x4) & near(x4,x5) & in(x5,x7) & n_building(x5) & Actor(e4,x5) & v_glow(e4) & of(x5,x6) & n_purple(x6) & Actor(e3,x3) & v_wait(e3)) & Recipient(e2,p1) & Actor(e2,x1) & Topic(e2,x3) & v_as(e2) & n_people(x3) & Actor(e1,x2) & v_kiss(e1) & (x1 = x2) & n_couple(x1))
exists e1 p1 x1 x2.(exists p2.(x1 = x2) & n_anniversary(x2) & of(x2,x1) & n_thing(x1) & n_thing(x1) & because(e1,p1) & Actor(e1,x1) & v_kiss(e1) & n_couple(x1))