With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Lebanon's civil war lasted fifteen years and three months.
text_B: Lake Crabtree is a 520 acre reservoir in Cary , North Carolina .. Cary. Cary, North Carolina. North Carolina. North Carolina. reservoir. reservoir. In order to alleviate the possibility of flooding , it was constructed in 1989 by the Natural Resources Conservation Service via damming the Crabtree Creek .. Crabtree Creek. Crabtree Creek ( Neuse River ). Natural Resources Conservation Service. Natural Resources Conservation Service. It is currently within the Lake Crabtree County Park and provides sailing and recreation opportunities to nearby residents .. Lake Crabtree County Park. Lake Crabtree County Park
not_related.