People are shopping and browsing at outdoor vendors.
People are shopping.
People are shopping is a restatement of the fact that they are shopping and browsing.
exists e2 e1 s1 s2 x1 x2 x3 x4.(at(e2,x4) & n_vendor(x4) & a_outdoor(s2) & Theme(s2,x4) & Actor(e2,x3) & v_browse(e2) & n_people(x3) & at(e1,x2) & n_vendor(x2) & a_outdoor(s1) & Theme(s1,x2) & Actor(e1,x1) & v_shop(e1) & n_people(x1))
exists p1 x1.(exists x2.((x1 = x2) & n_shop(x2)) & n_people(x1))