A yellow backhoe is tearing down a brick building.
There is a yellow backhoe.
If there is a building being torn down, it is probably by a yellow backhoe. It works both ways.
exists e1 s1 s2 x1 x2 x3.(a_down(s2) & Manner(e1,s2) & Theme(e1,x2) & Actor(e1,x1) & v_tear(e1) & n_building(x2) & of(x2,x3) & n_brick(x3) & n_backhoe(x1) & a_yellow(s1) & Theme(s1,x1))
exists p1 x1 s1 x2.((x1 = x2) & n_backhoe(x2) & a_yellow(s1) & Theme(s1,x2))