With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Slovakia joined a union.
text_B: On 5 April 2017 , a suicide bomber killed at least Eight people and wounded 24 near a Pakistan Army vehicle taking part in the census in the city of Lahore , Pakistan .. Lahore. Lahore. Pakistan. Pakistan. suicide bomber. suicide bomber. The injured were shifted to the Combined Military Hospital -LRB- CMH -RRB- and General Hospital .. Tehreek-i-Taliban Pakistan claimed responsibility .. Pakistan. Pakistan. Tehreek-i-Taliban Pakistan. Tehreek-i-Taliban Pakistan
not_related.