A man in a blue shirt is tossing a football.
The man waiting for his friends tosses a football.
Tossing a football does not necessarily mean waiting for his friends.
exists e1 s1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_toss(e1) & n_football(x3) & in(x1,x2) & n_shirt(x2) & a_blue(s1) & Theme(s1,x2) & n_man(x1))
exists e2 e1 x1 x2 x3 x4.(n_friend(x3) & of(x3,x1) & n_male(x1) & n_man(x1) & Theme(e2,x4) & Actor(e2,x1) & v_toss(e2) & n_football(x4) & for(e1,x3) & Actor(e1,x2) & v_wait(e1) & (x1 = x2))