With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Imagine Dragons is a musical group.
text_B: Arfvedsonite is a sodium amphibole mineral with composition  : -LSB- Na -RSB- -LSB- Na2 -RSB- -LSB- -LRB- Fe2 + -RRB- 4Fe3 + -RSB- -LSB- -LRB- OH -RRB- 2  |  Si8O22 -RSB- .. sodium. sodium. amphibole. amphibole. mineral. mineral. It crystallizes in the monoclinic prismatic crystal system and typically occurs as greenish black to bluish grey fibrous to radiating or stellate prisms .. monoclinic. monoclinic. It is a rather rare mineral occurring in nepheline syenite intrusions and agpaitic -LRB- peralkaline -RRB- pegmatites and granites as the Golden Horn batholith in Okanogan County , Washington -LRB- type locality for zektzerite -RRB- .. mineral. mineral. nepheline syenite. nepheline syenite. agpaitic. agpaitic. batholith. batholith. zektzerite. zektzerite. nepheline. nepheline. Occurrences include Mont Saint-Hilaire , Quebec , Canada ; the Ilimaussaq complex in Southern Greenland ; and in pegmatites of the Kola Peninsula , Russia .. Mont Saint-Hilaire. Mont Saint-Hilaire. Quebec. Quebec. Canada. Canada. Ilimaussaq complex. Ilimaussaq complex. Greenland. Greenland. Kola Peninsula. Kola Peninsula. Russia. Russia. Its mineral association includes nepheline , albite , aegirine , riebeckite , katophorite and quartz .. mineral. mineral. nepheline. nepheline. albite. albite. aegirine. aegirine. riebeckite. riebeckite. katophorite. katophorite. quartz. quartz. Arfvedsonite was discovered in 1823 and named for the Swedish chemist Johan August Arfwedson -LRB- 1792 -- 1841 -RRB- .. Johan August Arfwedson. Johan August Arfwedson
not_related.