A group of formally dressed people are laughing.
The people are dressed nicely.
People are part of a group and is people are formally dressed they are dressed nicely.
exists e1 e2 x1 x2.(Actor(e2,x1) & v_laugh(e2) & of(x1,x2) & n_people(x2) & Theme(e1,x2) & v_dress(e1) & r_formally(x2) & n_group(x1))
exists e1 s1 x1.(n_people(x1) & a_nicely(s1) & Manner(e1,s1) & Theme(e1,x1) & v_dress(e1))