A girl is in a snow tunnel.
A girl digging a snow tunnel
Just because a girl is in a snow tunnel, it doesn't mean she is digging the tunnel. The tunnel may have been built by her brother earlier in the day.
exists p1 x1.(exists x2 x3.(in(x1,x2) & n_tunnel(x2) & of(x2,x3) & n_snow(x3)) & n_girl(x1))
exists e1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_dig(e1) & n_tunnel(x3) & of(x3,x4) & n_snow(x4) & (x1 = x2) & n_girl(x1))