A group of ladies trying to learn how to belly dance.
A fraternity learns to samba.
Ladies don't belong to a fraternity and samba and belly dance are two different styles of dancing.
exists e1 p1 x1 x2 x3.(a_topic(x1) & Topic(e1,p1) & Actor(e1,x3) & v_try(e1) & exists e2 p2 s1 s2.(Topic(e2,p2) & a_belly(s2) & Manner(p2,s2) & exists e3.(Actor(e3,x3) & v_dance(e3)) & a_how(s1) & Manner(e2,s1) & Actor(e2,x3) & v_learn(e2)) & (x1 = x3) & of(x1,x2) & n_lady(x2) & n_group(x1))
exists e1 p1 x1.(Topic(e1,p1) & Actor(e1,x1) & v_learn(e1) & exists e2.(Actor(e2,x1) & v_samba(e2)) & n_fraternity(x1))