A man is hugging a snowman.
A man is trying to keep a snowman from falling over.
One can try to keep a snowman from falling over without hugging a snowman; one can also hug a snowman for reasons other than trying to hold it up
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_hug(e1) & n_snowman(x2) & n_man(x1))
exists e1 p1 x1.(Topic(e1,p1) & Actor(e1,x1) & v_try(e1) & exists e3 e2 s1 x2 x3.(from(e2,e3) & a_over(s1) & Manner(e3,s1) & Actor(e3,x3) & v_fall(e3) & Theme(e2,x2) & Actor(e2,x1) & v_keep(e2) & n_snowman(x2)) & n_man(x1))