With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Sachin Tendulkar was awarded the Bharat Ratna.
text_B: An Exchange Spring Magnet is a magnetic material with high coercivity and high saturation properties derived from the exchange interaction between a hard magnetic material and a soft magnetic material , respectively .. coercivity. coercivity. saturation. Saturation ( magnetic ). Coehoorn et al. were the first able to observe an actual exchange spring magnet .. magnet. magnet. Exchange spring magnets are cheaper than many magnets containing rare earth / transition metals -LRB- RE-TM Magnets -RRB- , as the hard phase of the magnet -LRB- which commonly comprises RE-TM material -RRB- can be less than 15 % of the overall magnet by volume .. magnet. magnet. RE-TM Magnets. Rare-earth magnet
not_related.