A man does yard work.
A man is tending to his lawn.
The man is tending to his lawn because he does yard work.
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_work(x2) & of(x2,x3) & n_yard(x3) & n_man(x1))
exists e1 x1 x2.(to(e1,x2) & n_lawn(x2) & of(x2,x1) & n_male(x1) & Actor(e1,x1) & v_tend(e1) & n_man(x1))