With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Varun Dhawan has received a nomination for a Filmfare Award.
text_B: Fluorite -LRB- also called fluorspar -RRB- is the mineral form of calcium fluoride , CaF2 .. calcium fluoride. calcium fluoride. It belongs to the halide minerals .. It crystallizes in isometric cubic habit , although octahedral and more complex isometric forms are not uncommon .. isometric. cubic crystal system. cubic habit. crystal habit. Mohs scale of mineral hardness , based on scratch Hardness comparison , defines value 4 as Fluorite .. Mohs scale of mineral hardness. Mohs scale of mineral hardness. scratch. Scratch hardness. Hardness comparison. Hardness comparison. Fluorite is a colorful mineral , both in visible and ultraviolet light , and the stone has ornamental and lapidary uses .. lapidary. lapidary. Industrially , fluorite is used as a flux for smelting , and in the production of certain glasses and enamels .. flux. flux ( metallurgy ). The purest grades of fluorite are a source of fluoride for hydrofluoric acid manufacture , which is the intermediate source of most fluorine-containing fine chemicals .. hydrofluoric acid. hydrofluoric acid. Optically clear transparent fluorite lenses have low dispersion , so lenses made from it exhibit less chromatic aberration , making them valuable in microscopes and telescopes .. dispersion. dispersion ( optics ). chromatic aberration. chromatic aberration. Fluorite optics are also usable in the far-ultraviolet range , where conventional glasses are too absorbent for use .
not_related.