Tourists are walking the streets and looking at the shops' goods.
The tourists are planning an terrorist attack.
All who walk on the streets are not terrorists.
exists e1 e2 x1 x2 x3 x4 x5.(n_goods(x5) & of(x5,x4) & n_shop(x4) & n_street(x2) & at(e2,x5) & Actor(e2,x3) & v_look(e2) & n_tourist(x3) & Theme(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_tourist(x1))
exists e1 s1 x1 x2.(n_tourist(x1) & Theme(e1,x2) & Actor(e1,x1) & v_plan(e1) & n_attack(x2) & a_terrorist(s1) & Theme(s1,x2))