A boy in black waves his arms while other people are behind him on a field.
a boy tries to get attention
A boy in black waving his arms doesn't mean that boy is trying to get attention.
(x)
exists e1 p1 x1.(Topic(e1,p1) & Actor(e1,x1) & v_try(e1) & exists e2 x2.(Theme(e2,x2) & Actor(e2,x1) & v_get(e2) & n_attention(x2)) & n_boy(x1))