A crowd gathers at a huge monumental building.
There is going to be a ceremony at the building.
Sentence 1 is missing a ceremony
exists s1 s2 x1 x2 x3.(a_topic(x1) & at(x1,x3) & n_building(x3) & a_monumental(s2) & Theme(s2,x3) & a_huge(s1) & Theme(s1,x3) & n_gather(x1) & of(x1,x2) & n_crowd(x2))
exists e1 p1 x1 x3.(n_building(x3) & Topic(e1,p1) & Actor(e1,x1) & v_go(e1) & exists p2 x2.((x1 = x2) & at(x2,x3) & n_ceremony(x2)))