With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Entire History of You was written by anyone except someone who worked with David Mitchell.
text_B: Karen Middleton -LRB- born February 24 , 1966 -RRB- is a former member of Colorado House of Representatives in the State of Colorado .. Colorado House of Representatives. Colorado House of Representatives. State of Colorado. Colorado
not_related.