A man, his little son and their dog going for a walk in the mountains.
The man and his son are snow sledding down the side of a mountain.
The man and his son cannot be going for a walk and snow sledding at the same time.
exists e1 s1 x1 x2 x3 x4 x5 x6 x7.(n_mountain(x7) & a_topic(x1) & rel(x1,x2) & subset_of(x4,x2) & in(e1,x7) & for(e1,x6) & n_walk(x6) & Actor(e1,x5) & v_go(e1) & (x4 = x5) & n_dog(x4) & of(x4,x1) & n_thing(x1) & subset_of(x3,x2) & n_son(x3) & a_little(s1) & Theme(s1,x3) & of(x3,x1) & n_male(x1) & n_man(x1))
exists e1 p1 x1 x2 x3 x4.(n_side(x4) & n_son(x3) & of(x3,x2) & n_male(x2) & n_man(x2) & exists e2 s1 x5.(a_down(s1) & Manner(e2,s1) & Theme(e2,x4) & Actor(e2,x1) & v_sled(e2) & of(x4,x5) & n_mountain(x5)) & Topic(e1,p1) & Actor(e1,x1) & v_snow(e1) & subset_of(x3,x1) & subset_of(x2,x1))