A large group of men in white appear to be working over some kind of grill.
A group of men are trying to stay warm by the grill.
Working over some kind of grill doesn't imply trying to stay warm.
exists e1 p1 s1 x1 x2 x3.(Topic(e1,p1) & Actor(e1,x1) & v_appear(e1) & exists e2 x4 x5.(over(e2,x4) & of(x4,x5) & n_grill(x5) & n_kind(x4) & Actor(e2,x1) & v_work(e2)) & of(x1,x2) & in(x2,x3) & n_white(x3) & n_man(x2) & n_group(x1) & a_large(s1) & Theme(s1,x1))
exists e1 p1 x1 x2 x3.(n_grill(x3) & Topic(e1,p1) & Actor(e1,x1) & v_try(e1) & exists e2 p2.(by(e2,x3) & exists s1.(Theme(s1,x1) & a_warm(s1)) & Topic(e2,p2) & Actor(e2,x1) & v_stay(e2)) & of(x1,x2) & n_man(x2) & n_group(x1))