With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Captain America had a movie serial in 1956.
text_B: The dusky field rat -LRB- Rattus sordidus -RRB- is a species of rodent in the family Muridae .. Muridae. Muridae. Rattus. Rattus. rodent. rodent. It is found in Australia , Indonesia , and Papua New Guinea .. Australia. Australia. Indonesia. Indonesia. Papua New Guinea. Papua New Guinea. In Australia it is found in northern Queensland and along the east coast as far south as Shoalwater Bay .. Australia. Australia
not_related.