Three female dancers are in front of a pale curtain with a single knee raised and their heads dropped back.
The women are ballerinas.
Female dancers do not have to be women.  Female dancers do not have to be ballerinas.
exists e1 p1 s1 s2 x1 x2.(a_back(s2) & Manner(e1,s2) & Actor(e1,x2) & v_drop(e1) & n_head(x2) & of(x2,x1) & n_thing(x1) & exists e2 s3 s4 x3 x4 x5 x6.(in(x1,x3) & of(x3,x4) & with(x4,x5) & Theme(e2,x6) & v_raise(e2) & (x5 = x6) & n_knee(x5) & a_single(s4) & Theme(s4,x5) & n_curtain(x4) & a_pale(s3) & Theme(s3,x4) & n_front(x3)) & n_dancer(x1) & a_female(s1) & Theme(s1,x1) & card_eq_3(x1))
exists p1 x1.(n_woman(x1) & exists x2.((x1 = x2) & n_ballerina(x2)))