With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The President of Russia has the power to convene the Federal Assembly.
text_B: Camera Lucida -LRB- La chambre claire -RRB- is a short book published in 1980 by the French literary theorist and philosopher Roland Barthes .. Roland Barthes. Roland Barthes. literary theorist. literary theory. philosopher. philosopher. It is simultaneously an inquiry into the nature and essence of photography and a eulogy to Barthes ' late mother .. photography. photography. The book investigates the effects of photography on the spectator -LRB- as distinct from the photographer , and also from the object photographed , which Barthes calls the `` spectrum '' -RRB- .. photography. photography. In a deeply personal discussion of the lasting emotional effect of certain photographs , Barthes considers photography as asymbolic , irreducible to the codes of language or culture , acting on the body as much as on the mind .. photography. photography. The book develops the twin concepts of studium and punctum  : studium denoting the cultural , linguistic , and political interpretation of a photograph , punctum denoting the wounding , personally touching detail which establishes a direct relationship with the object or person within it .
not_related.