With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Marie Curie studied in Moscow.
text_B: Sub-Roman Britain is a term derived from an archaeological label for the material culture of Great Britain in Late Antiquity , the transition period between the Roman Empire 's Crisis of the Third Century around AD 235 -LRB- and the subsequent collapse and end of Roman Britain -RRB- , until the start of the Early Medieval period .. archaeological. archaeology. Great Britain. Great Britain. Late Antiquity. Late Antiquity. Roman Empire. Roman Empire. Crisis of the Third Century. Crisis of the Third Century. collapse. collapse of the Roman Empire. end of Roman Britain. End of Roman rule in Britain. Early Medieval. Early Medieval. Roman. Ancient Rome. The term `` Post-Roman Britain '' is also used for the period , mainly in non-archaeological contexts .. archaeological. archaeology. Roman. Ancient Rome. The term `` sub-Roman '' was originally used to describe archaeological remains such as potsherds found in sites of the 5th and 6th centuries , and hinted at the decay of locally-made wares from a previous higher standard that had existed under the Roman Empire .. archaeological. archaeology. Roman Empire. Roman Empire. Roman. Ancient Rome. It is now more often used to denote this period of history instead .. Although the culture of Britain in the period was mainly derived from Roman and Celtic sources , there were also Saxons settled as foederati in the area , originally from Saxony in northwestern Germany , although the term ` Saxon ' was used by the British for all Germanic incomers .. Roman. Ancient Rome. Celtic. Celts. Saxons. Saxons. foederati. foederati. Saxony. Lower Saxony. Gradually the latter assumed more control -LRB- see Anglo-Saxon England -RRB- .. Anglo-Saxon England. Anglo-Saxon England. The Picts in northern Scotland were outside the applicable area .. Picts. Picts
not_related.