A boy stands in the road wearing a big red hat.
The boy's hat was purchased yesterday
Just because a boy is wearing a hat it doesn't mean it was purchased yesterday.
exists e1 e2 s1 s2 x1 x2 x3.(n_road(x2) & for(e1,e2) & Theme(e2,x3) & Actor(e2,x1) & v_wear(e2) & n_hat(x3) & a_red(s2) & Theme(s2,x3) & a_big(s1) & Theme(s1,x3) & in(e1,x2) & Actor(e1,x1) & v_stand(e1) & n_boy(x1))
exists e1 x1 x2 x3.(n_hat(x2) & of(x2,x1) & n_boy(x1) & Time(e1,x3) & n_yesterday(x3) & Theme(e1,x2) & v_purchase(e1))