Man secures a large block of concrete.
A man interacts with concrete.
A person that secures a block of concrete is interacting with it.
exists e1 s1 x1 x2 x3.(ne_nam_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_secure(e1) & of(x2,x3) & n_concrete(x3) & n_block(x2) & a_large(s1) & Theme(s1,x2))
exists e1 x1 x2.(with(e1,x2) & n_concrete(x2) & Actor(e1,x1) & v_interact(e1) & n_man(x1))