With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Johan Heldenbergh was the lead role in The Broken Circle Breakdown.
text_B: Murray Guy is a contemporary art gallery specializing in emerging and mid-career contemporary artists .. art gallery. art gallery. contemporary art. contemporary art. Murray Guy Gallery is located in the Chelsea , Manhattan gallery district at 453 West 17th Street .. It was founded by Margaret Murray and Janice Guy .. The gallery covers contemporary photography , video , writing , sculpture , drawing , and painting .. photography. photography. video. video. writing. writing. sculpture. sculpture. drawing. drawing. painting. painting
not_related.