A boy in black waves his arms while other people are behind him on a field.
two men signal with morse code
Morse code by is usually done inside not outside on a field.
(x)
exists e1 x1 x2 x3.(with(e1,x3) & n_morse(x3) & Theme(e1,x2) & Actor(e1,x1) & v_signal(e1) & n_code(x2) & n_man(x1) & card_eq_2(x1))