Man laughing and talking on cellphone outside.
A man writes a letter.
Laughing and writes are different.
exists e1 s1 x1 x2 x3 x4 x5.(a_topic(s1) & subset_of(e1,s1) & on(e1,x4) & n_outside(x4) & of(x4,x5) & n_cellphone(x5) & Actor(e1,x3) & v_talk(e1) & n_thing(x3) & subset_of(x1,s1) & n_laughing(x1) & of(x1,x2) & n_man(x2))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_write(e1) & n_letter(x2) & n_man(x1))