With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Enemy (2013 film) stars a Canadian actress born in the 1980s.
text_B: a-ha Hits South America is a 5-track live 12 '' EP by the Norwegian band a-ha and contains 5 previously unreleased tracks from the recording at the concert of the Live in South America film in Porto Alegre , Brazil in 1991 on 180 gram black vinyl for the first time .. a-ha. a-ha. It was an exclusive Record Store Day release in 2016 and was limited to 3000 copies .
not_related.