A person chopping wood in the winter.
Wood is being chopped during the wintertime.
If wood is being chopped then a person has to be involved.
exists e1 x1 x2 x3 x4.(n_winter(x4) & a_topic(x1) & in(e1,x4) & Theme(e1,x3) & Actor(e1,x2) & v_chop(e1) & n_wood(x3) & (x1 = x2) & n_person(x1))
exists e1 x1 x2.(n_wintertime(x2) & ne_nam_wood(x1) & during(e1,x2) & Theme(e1,x1) & v_chop(e1))