With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Psychological horror is unrelated to horror and psychological fiction.
text_B: Psychological horror is a subgenre of horror and psychological fiction , which relies on the mental , emotional and psychological status of characters to frighten or unsettle readers , viewers , or players .. subgenre. genre. horror. horror fiction. psychological fiction. psychological fiction. The subgenre frequently overlaps with the related subgenre of psychological thriller , and it often uses mystery elements and characters with unstable , unreliable , or disturbed psychological states to enhance the suspense and horror of the setting and plot and to provide an overall unpleasant , unsettling , or distressing atmosphere .. subgenre. genre. horror. horror fiction. psychological thriller. psychological thriller. mystery. mystery fiction. suspense. suspense. atmosphere. Mood ( literature )
related.