A man on his wedding day.
bridegroom
man on his wedding day implies that he is a groom
exists x1 x2 x3.(a_topic(x1) & on(x1,x2) & n_day(x2) & of(x2,x3) & n_wedding(x3) & of(x2,x1) & n_male(x1) & n_man(x1))
exists x1.(a_topic(x1) & n_bridegroom(x1))