Man using a vacuum on his lawn.
The lawn was mowed very well.
A vacuum cannot cause a lawn to be mowed.
exists e1 x1 x2 x3 x4.(a_topic(x1) & on(e1,x4) & n_lawn(x4) & of(x4,x1) & n_male(x1) & Theme(e1,x3) & Actor(e1,x2) & v_use(e1) & n_vacuum(x3) & (x1 = x2) & n_man(x1))
exists e1 s1 x1.(n_lawn(x1) & r_very(e1) & a_well(s1) & Manner(e1,s1) & Theme(e1,x1) & v_mow(e1))