Two people getting married.
The couple have been together many years.
Sentence 1 does not indicate how many years the two people/couple have been together.
exists e1 p1 x1 x2.(a_topic(x1) & exists s1.(Theme(s1,x2) & a_marry(s1)) & Topic(e1,p1) & Actor(e1,x2) & v_get(e1) & (x1 = x2) & n_people(x1) & card_eq_2(x1))
exists s1 x1 x2.(n_couple(x1) & r_many(s1) & Time(s1,x2) & n_year(x2) & Theme(s1,x1) & a_together(s1))