A group of people are either standing or sitting, some are wearing hats and scarves, while some are not.
There is a group of people, some standing, some sitting, and they are waiting for a bus.
When there is a group of people  standing, it does not mean that they are waiting for a bus.
(exists e1 s1 x1 x2.(a_either(s1) & Manner(e1,s1) & Actor(e1,x1) & v_stand(e1) & of(x1,x2) & n_people(x2) & n_group(x1)) | exists e2 e3 p1 x3 x4 x5 x6 x7.(while(e3,e2) & exists x8.(-exists e4.(Actor(e4,x8) & v_be(e4)) & n_thing(x8)) & while(e3,p1) & Theme(e3,x5) & Actor(e3,x4) & v_wear(e3) & subset_of(x7,x5) & n_scarf(x7) & subset_of(x6,x5) & n_hat(x6) & n_thing(x4) & Actor(e2,x3) & v_sit(e2) & n_thing(x3)))
exists e1 p1 x1 x2.(for(e1,x2) & n_bus(x2) & Actor(e1,x2) & v_wait(e1) & n_thing(x2) & exists e2 x3 x4 x5 x6 x7.((x1 = x3) & of(x3,x4) & rel(x4,x5) & rel(x5,x6) & Actor(e2,x7) & v_sit(e2) & (x6 = x7) & n_thing(x6) & n_standing(x5) & n_people(x4) & n_group(x3)))