A large group of red-uniformed drummers performs in front of geometrical concrete building.
some drummers rehearse
We do not know if the drummers are there to rehearse, they could be performing.
exists e1 s1 s2 s3 s4 x1 x2 x3 x4.(in(e1,x3) & of(x3,x4) & n_building(x4) & a_concrete(s4) & Theme(s4,x4) & a_geometrical(s3) & Theme(s3,x4) & n_front(x3) & Actor(e1,x1) & v_perform(e1) & of(x1,x2) & n_drummer(x2) & a_red-uniformed(s2) & Theme(s2,x2) & n_group(x1) & a_large(s1) & Theme(s1,x1))
exists e1 x1.(Actor(e1,x1) & v_rehearse(e1) & n_drummer(x1))