With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Theodore Roosevelt was unwilling to lead volunteers to France.
text_B: A land bridge is a connection between two otherwise unconnected areas of land .. land bridge. land bridge. Land bridge may also refer to  :. Land bridge -LRB- rail -RRB- , the transport of containers by rail between ports on either side of a land mass. Natural arch , a geological feature. Natural arch. Natural arch. Land bridges in air rights , covering transportation facilities with bridges for non-transportation uses. air rights. air rights
not_related.