With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Egypt is in Africa.
text_B: In the California Route Marker Program , which designates county routes in California , only two highways exist in the `` R '' zone  : CR R2 and CR R3 .. county routes in California. county routes in California. Both of these routes are in Riverside County .. Riverside County. Riverside County, California. TOC
not_related.