premise: Performers sing together on stage
hypothesis: The performers are singing solo.
explanation_1: if persons singing together it can't be inferred as solo
explanation_2: Performers can't be singing solo if they are singing together.
explanation_3: Performers that sing together on stage cannot be singing solo.
premise_logic: exists e1 s1 x1 x2.(on(e1,x2) & n_stage(x2) & a_together(s1) & Manner(e1,s1) & Actor(e1,x1) & v_sing(e1) & n_performer(x1))
hypothesis_logic: exists e1 x1 x2.(n_performer(x1) & Theme(e1,x2) & Actor(e1,x1) & v_sing(e1) & n_solo(x2))