With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Egypt is a galaxy.
text_B: David Hepher -LRB- born Surrey , England , 1935 -RRB- is a British artist , best known for his paintings of buildings , especially tower blocks , including the Aylesbury Estate  :. Surrey. Surrey. England. England. British. United Kingdom. tower blocks. tower blocks. Aylesbury Estate. Aylesbury Estate
not_related.