Girl in blue and white uniform doing cheers
A boy is performing in a marching band.
The subject is either a girl or a boy, not both.  The subject cannot be doing cheers and performing in a marching band simultaneously.
exists e1 s1 s2 s3 x1 x2 x3.(ne_nam_girl(s1) & a_topic(s1) & in(s1,x1) & Theme(e1,x3) & Actor(e1,x2) & v_do(e1) & n_cheer(x3) & (x1 = x2) & n_uniform(x1) & a_white(s3) & Theme(s3,x1) & a_blue(s2) & Theme(s2,x1))
exists e1 s1 x1 x2.(in(e1,x2) & n_band(x2) & a_marching(s1) & Theme(s1,x2) & Actor(e1,x1) & v_perform(e1) & n_boy(x1))