premise: Two young girls are playing large stringed instruments behind music stands, with a window in the background.
hypothesis: The girls are musicians.
explanation_1: A musician plays an instrument. The girls are playing instruments. Therefor the girls are musicians.
explanation_2: The girls are playing instruments, so they can be considered musicians.
explanation_3: they are playing a large instrument
premise_logic: exists e1 s1 s2 s3 x1 x2 x3 x4 x5 x6.(n_background(x6) & with(e1,x5) & in(x5,x6) & n_window(x5) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & behind(x2,x3) & n_stand(x3) & of(x3,x4) & n_music(x4) & n_instrument(x2) & a_stringed(s3) & Theme(s3,x2) & a_large(s2) & Theme(s2,x2) & n_girl(x1) & a_young(s1) & Theme(s1,x1) & card_eq_2(x1))
hypothesis_logic: exists p1 x1.(n_girl(x1) & exists x2.((x1 = x2) & n_musician(x2)))