A large crowd gathers for a night in the city.
A big group of people was together for the night.
A large crowd is a synonym for a big group, gathers implies was together.
exists s1 x1 x2 x3 x4.(n_city(x4) & a_topic(x1) & for(x1,x3) & in(x3,x4) & n_night(x3) & n_gather(x1) & of(x1,x2) & n_crowd(x2) & a_large(s1) & Theme(s1,x1))
exists s1 s2 x1 x2 x3.(n_night(x3) & for(s2,x3) & Theme(s2,x1) & a_together(s2) & of(x1,x2) & n_people(x2) & n_group(x1) & a_big(s1) & Theme(s1,x1))