A white-haired man is staring at a metal rod.
The man is metal detecting.
The metal rod might not necessarily part of the activity of metal detecting.
exists e1 s1 x1 x2 x3.(at(e1,x2) & n_rod(x2) & of(x2,x3) & n_metal(x3) & Actor(e1,x1) & v_stare(e1) & n_man(x1) & a_white-haired(s1) & Theme(s1,x1))
exists p1 x1.(n_man(x1) & exists x2 x3.((x1 = x2) & n_detecting(x2) & of(x2,x3) & n_metal(x3)))