A guy in protective gear is looking and smiling at someone.
A guy is trying to be friendly to others.
The man is not necessarily trying to be friendly to others and is most likely smiling at one person only.
exists e1 e2 s1 s2 x1 x2 x3 x4 x5.(at(e2,x5) & n_person(x5) & Actor(e2,x3) & v_smile(e2) & in(x3,x4) & n_gear(x4) & a_protective(s2) & Theme(s2,x4) & n_guy(x3) & Actor(e1,x1) & v_look(e1) & in(x1,x2) & n_gear(x2) & a_protective(s1) & Theme(s1,x2) & n_guy(x1))
exists e1 p1 x1.(Topic(e1,p1) & Actor(e1,x1) & v_try(e1) & exists s1 x2.(to(s1,x2) & -(x2 = x1) & n_person(x2) & Theme(s1,x1) & a_friendly(s1)) & n_person(x1) & n_guy(x1))