With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Google was founded in the 90's.
text_B: O Fortuna is the second studio album by Welsh classical singer Rhydian .. Rhydian. Rhydian Roberts. It was nominated for NS&I Album of the Year .. NS&I. NS&I. The repertoire ranges over English , Welsh and Latin material , featuring four tracks written by Karl Jenkins , who also produced it .. Karl Jenkins. Karl Jenkins. Tracks include collaborations with Kiri te Kanawa and Bryn Terfel .. Kiri te Kanawa. Kiri te Kanawa. Bryn Terfel. Bryn Terfel. The album sold 29,784 copies in its first week .
not_related.