With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Nicki Minaj made the album This Desert Life.
text_B: The Tonti diagram , created by the Italian physicist and mathematician Enzo Tonti , is a diagram that classifies variables and equations of physical theories of classical and relativistic physics .. The theories involved are  : particle dynamics , analytical mechanics , mechanics of deformable solids , fluid mechanics , electromagnetism , gravitation , heat conduction , and irreversible thermodynamics .. The classification stems from the observation that each physical variable has a well-defined association with a space and a time element , as shown in Fig. 1 , which can be grasped from the corresponding global variable and from its measuring process .
not_related.