With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Joaquin Phoenix is not an activist.
text_B: Means End was a Swedish progressive metal band from Stockholm whose sound is spearheaded by SATB choirs , operatic vocals , 8-string guitars , and jazz-fusion compositions .. Stockholm. Stockholm. progressive metal. progressive metal. SATB. SATB. Their music is likened to an amalgamation of artists such as Eric Whitacre , Devin Townsend , Meshuggah , Yellowjackets .. Eric Whitacre. Eric Whitacre. Devin Townsend. Devin Townsend. Meshuggah. Meshuggah. Yellowjackets. Yellowjackets. They are notable for bridging the gap between classical composition and contemporary instrumentalism .
not_related.