A father and his children picking out a Christmas tree.
Bad!! don't do that
Picking out a Christmas tree is not a bad thing.
exists e1 s1 s2 x1 x2 x3 x4 x5.(a_topic(s1) & subset_of(x2,s1) & a_out(s2) & Manner(e1,s2) & Theme(e1,x4) & Actor(e1,x3) & v_pick(e1) & n_tree(x4) & (x4 = x5) & ne_tim_christmas(x5) & (x2 = x3) & n_child(x2) & of(x2,x1) & n_male(x1) & subset_of(x1,s1) & n_father(x1))
exists s1 x1 x2.(n_thing(x2) & ne_nam_bad(x1) & a_!(s1) & Theme(s1,x1) & -exists e1.(Theme(e1,x2) & Actor(e1,x1) & v_do(e1)))