A black guy with dreadlocks is dancing along with other people.
A black guy with long hair is dancing with other people at a wedding.
Not all long hair is dreadlock, and people can dance outside of a wedding.
exists e1 s1 s2 x1 x2 x3 x4.(n_people(x4) & with(e1,x3) & -(x3 = x4) & n_people(x3) & a_along(s2) & Manner(e1,s2) & Actor(e1,x1) & v_dance(e1) & with(x1,x2) & n_dreadlock(x2) & n_guy(x1) & a_black(s1) & Theme(s1,x1))
exists e1 s1 s2 x1 x2 x3 x4 x5.(n_people(x4) & at(e1,x5) & n_wedding(x5) & with(e1,x3) & -(x3 = x4) & n_people(x3) & Actor(e1,x1) & v_dance(e1) & with(x1,x2) & n_hair(x2) & a_long(s2) & Theme(s2,x2) & n_guy(x1) & a_black(s1) & Theme(s1,x1))