premise: Archaeologists are on the ground digging for something.
hypothesis: someone is listening to music
explanation_1: Someone does not have to be an archaeologist.  Someone is either digging or listening for music.
premise_logic: exists p1 x1 x2.(n_ground(x2) & exists e1 x3 x4.(on(x1,x2) & for(e1,x4) & n_thing(x4) & Actor(e1,x3) & v_dig(e1) & (x2 = x3)) & n_archaeologist(x1))
hypothesis_logic: exists e1 x1 x2.(to(e1,x2) & n_music(x2) & Actor(e1,x1) & v_listen(e1) & n_person(x1))
premise_sim: exists x1 x2.(n_ground(x2) & n_archaeologist(x1) & exists e1 x3 x4.(v_dig(e1) & on(x1,x2) & n_thing(x4) & for(e1,x4) & Actor(e1,x3) & (x2 = x3)))
hypothesis_sim: exists e1 x1 x2.(v_listen(e1) & to(e1,x2) & n_person(x1) & n_music(x2) & Actor(e1,x1))