With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Slovakia has been part of the European Union since 2013.
text_B: A Fast fuel system allows speedy refuelling of vehicles .. Most large earthmoving and mining vehicles with diesel fuel tanks over 150 USgal are equipped with fast refueling systems .. diesel fuel. diesel fuel. Fast refueling systems utilize an automatic shut off fuel nozzle , receiver and level control device .. Fast refuel systems operate by connection of a fill nozzle to the vehicle 's fuel tank and a source mounted pump delivers fuel into the tank at rates up to 150 USgal per minute .. fuel tank. fuel tank. Fast fill systems in general allow for ground level refueling and automatic shut-off upon a full tank .. Ground level refueling increases operator safety as climbing onto vehicles during refueling is not necessary as the fill point receiver may be located in a location on the vehicle which is easily accessed .
not_related.