With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Marilyn Monroe was an actress.
text_B: Instant-off is a feature found in modern laptops , predominantly included in premium , high-end models only .. high-end. Luxury good. Instant-off enables users of such devices to immediately power down their hardware without enduring the long and often arduous waiting process typically associated with laptops that are not Instant-off enabled .. Whilst such a feature could technically be incorporated into inferior mainstream consumer models , the high cost and low level of user education associated with this market are prohibitive .
not_related.