People sitting at tables reading or working.
People sitting and working.
Sitting can be done at tables.
exists e1 x1 x2 x3 x4.(a_topic(x1) & at(e1,x3) & (n_read(x3) | n_work(x3)) & of(x3,x4) & n_table(x4) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_people(x1))
exists e1 e2 x1 x2.(Actor(e2,x2) & v_work(e2) & n_people(x2) & Actor(e1,x1) & v_sit(e1) & n_people(x1))