Three females stand in front of microphones with mouths open in apparent act of singing.
Three females are standing in front of microphones.
Are standing is a rephrase of stand.
exists e1 s1 s2 x1 x2 x3 x4 x5 x6 x7.(in(e1,x2) & of(x2,x7) & n_singing(x7) & in(x2,x6) & n_act(x6) & a_apparent(s2) & Theme(s2,x6) & of(x2,x3) & with(x3,x4) & Theme(s1,x5) & a_open(s1) & (x4 = x5) & n_mouth(x4) & n_microphone(x3) & n_front(x2) & Actor(e1,x1) & v_stand(e1) & n_female(x1) & card_eq_3(x1))
exists e1 x1 x2 x3.(in(e1,x2) & of(x2,x3) & n_microphone(x3) & n_front(x2) & Actor(e1,x1) & v_stand(e1) & n_female(x1) & card_eq_3(x1))