With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Mark Wahlberg co-stars in a reality series.
text_B: This is a list of post-nominal letters used in Johor .. The order in which they follow an individual 's name is the same as the order of precedence for the wearing of order insignias , decorations , and medals .. When applicable , non-hereditary titles are indicated .. non-hereditary titles. Malay styles and titles. Precedence  :
not_related.