With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Audrey Hepburn gave to the organizations since 1954.
text_B: Porin is a grand opera by Vatroslav Lisinski .. Porin. Porin ( disambiguation ). grand opera. grand opera. Vatroslav Lisinski. Vatroslav Lisinski. The Croatian text was by Dimitrija Demeter .. Croatian. Croatian language. Dimitrija Demeter. Dimitrija Demeter. It was Lisinski 's second opera , the second for Croatia .. It was composed during 1848-51 but not performed until 2 October 1897 , when it was staged in Zagreb .. Zagreb. Zagreb
not_related.