A construction worker wearing a red helmet and a yellow safety vest is manning a piece of heavy machinery.
A construction worker in a helmet is using a piece of machinery.
A construction worker manning a piece of heavy machinery is same as construction worker using a piece of machinery
exists e1 e2 s1 s2 s3 x1 x2 x3 x4 x5 x6 x7 x8 x9.(Theme(e2,x8) & Actor(e2,x1) & v_man(e2) & of(x8,x9) & n_machinery(x9) & a_heavy(s3) & Theme(s3,x9) & n_piece(x8) & subset_of(x6,x1) & n_vest(x6) & of(x6,x7) & n_safety(x7) & a_yellow(s2) & Theme(s2,x6) & subset_of(x2,x1) & Theme(e1,x5) & Actor(e1,x4) & v_wear(e1) & n_helmet(x5) & a_red(s1) & Theme(s1,x5) & (x2 = x4) & n_worker(x2) & of(x2,x3) & n_construction(x3))
exists e1 x1 x2 x3 x4 x5.(Theme(e1,x4) & Actor(e1,x1) & v_use(e1) & of(x4,x5) & n_machinery(x5) & n_piece(x4) & in(x1,x3) & n_helmet(x3) & n_worker(x1) & of(x1,x2) & n_construction(x2))