A man in an orange hard hat and vest looks at an object in his hand while the man next to him stands on a ladder in order to reach the ceiling.
The man sits on the couch.
A man cannot look at an object and stand on a ladder while sitting.
(x)
exists e1 x1 x2.(n_couch(x2) & n_man(x1) & on(e1,x2) & Actor(e1,x1) & v_sit(e1))