A boy walks with a ball tucked under his arm.
A boy is heading to soccer practice
Not all boys are headed to soccer practice.
exists e2 e1 x1 x2 x3 x4.(with(e1,x2) & under(e2,x4) & n_arm(x4) & of(x4,x1) & n_male(x1) & Theme(e2,x3) & v_tuck(e2) & (x2 = x3) & n_ball(x2) & Actor(e1,x1) & v_walk(e1) & n_boy(x1))
exists e1 x1 x2 x3.(to(e1,x2) & n_practice(x2) & of(x2,x3) & n_soccer(x3) & Actor(e1,x1) & v_head(e1) & n_boy(x1))