The people on the street need to be wearing sunscreen.
Some people are wearing sunscreen
Just because people should be wearing sunscreen does't mean any of the people are wearing it.
exists p1 x1 x2 x3.(Topic(x2,p1) & exists e1 x4.(Theme(e1,x4) & Actor(e1,x2) & v_wear(e1) & n_sunscreen(x4)) & n_need(x2) & of(x2,x3) & n_street(x3) & n_people(x1) & a_topic(x1) & on(x1,x2))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_sunscreen(x2) & n_people(x1))