A man crossing a stream over a log covered with snow in winter.
A man and his dog tip toe across a log over the stream.
The man does not necessarily have a dog nor does he necessarily tip toe across the log.
exists e2 e1 x1 x2 x3 x4 x5 x6 x7.(a_topic(x1) & Theme(e2,x3) & Actor(e2,x2) & v_cross(e2) & over(x3,x4) & in(e1,x7) & n_winter(x7) & with(e1,x6) & n_snow(x6) & Theme(e1,x5) & v_cover(e1) & (x4 = x5) & n_log(x4) & n_stream(x3) & (x1 = x2) & n_man(x1))
exists s1 x1 x2 x3 x4 x5 x6.(n_stream(x6) & a_topic(s1) & subset_of(x2,s1) & over(x2,x6) & across(x2,x5) & n_log(x5) & n_toe(x2) & of(x2,x4) & n_tip(x4) & of(x2,x3) & n_dog(x3) & of(x2,x1) & n_male(x1) & subset_of(x1,s1) & n_man(x1))