A older male is working on a snow truck.
A man plows snow after a massive snow storm.
There are other reasons he could be working on it other than after a massive snow storm.
exists e1 s1 x1 x2 x3.(on(e1,x2) & n_truck(x2) & of(x2,x3) & n_snow(x3) & Actor(e1,x1) & v_work(e1) & n_male(x1) & r_more(s1) & a_older(s1) & Theme(s1,x1))
exists e1 s1 x1 x2 x3 x4.(after(e1,x3) & n_storm(x3) & of(x3,x4) & n_snow(x4) & a_massive(s1) & Theme(s1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_plow(e1) & n_snow(x2) & n_man(x1))