With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Diana is an album that was produced in a music studio.
text_B: Mortdale railway station is located on the Illawarra line , serving the Sydney suburb of Mortdale .. Mortdale. Mortdale. Illawarra. Illawarra railway line. Illawarra line. Illawarra railway line. Sydney. Sydney. It is served by Sydney Trains T4 line services .. Sydney Trains. Sydney Trains. Sydney. Sydney. T4 line. Eastern Suburbs & Illawarra Line
not_related.