Several people wearing formal clothes are sleeping together on grass.
People are very tired.
Just because people are sleeping does not mean they are very tired.
exists e1 e2 s1 s2 s3 x1 x2 x3 x4.(a_together(s3) & Manner(e2,s3) & on(e2,x4) & n_grass(x4) & Actor(e2,x1) & v_sleep(e2) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_clothes(x3) & a_formal(s2) & Theme(s2,x3) & (x1 = x2) & n_people(x1) & a_several(s1) & Theme(s1,x1))
exists s1 x1.(r_very(s1) & Theme(s1,x1) & a_tired(s1) & n_people(x1))