Two people performing an archaeological dig.
There are people digging.
People are digging at an archaeological dig.
exists e1 s1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_perform(e1) & n_dig(x3) & a_archaeological(s1) & Theme(s1,x3) & (x1 = x2) & n_people(x1) & card_eq_2(x1))
exists p1 x1 e1 x2 x3.((x1 = x2) & Actor(e1,x3) & v_dig(e1) & (x2 = x3) & n_people(x2))