With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Seven Days in May features Fredric March.
text_B: A slot canyon is a narrow canyon , formed by the wear of water rushing through rock .. canyon. canyon. A slot canyon is significantly deeper than it is wide .. canyon. canyon. Some slot canyons can measure less than 1 m across at the top but drop more than 30 m to the floor of the canyon .. canyon. canyon. Many slot canyons are formed in sandstone and limestone rock , although slot canyons in other rock types such as granite and basalt are possible .. sandstone. sandstone. limestone. limestone. granite. granite. basalt. basalt. Even in sandstone and limestone , only a very small number of creeks will form slot canyons due to a combination of the particular characteristics of the rock and regional rainfall .. sandstone. sandstone. limestone. limestone
not_related.