Archaeologists digging out a site.
They are sitting on the couch
Sitting and digging are two different things.
exists e1 s1 x1 x2 x3.(a_topic(x1) & a_out(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x2) & v_dig(e1) & n_site(x3) & (x1 = x2) & n_archaeologist(x1))
exists e1 x1 x2.(n_couch(x2) & n_thing(x1) & on(e1,x2) & Actor(e1,x1) & v_sit(e1))