With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Evan Rachel Wood has been employed with George Clooney.
text_B: The Spearfish Formation is a geologic formation , originally described from the Black Hills region of South Dakota , United States , but also recognised in North Dakota , Wyoming , Montana and Nebraska .. Black Hills. Black Hills. United States. United States. formation. Formation ( geology ). South Dakota. South Dakota. North Dakota. North Dakota. Wyoming. Wyoming. Montana. Montana. Nebraska. Nebraska. It is a heterogeneous red bed formation , commonly with siltstone and gypsum low in the formation and sandstone and shale higher up .. formation. Formation ( geology ). red bed. red bed. siltstone. siltstone. gypsum. gypsum. sandstone. sandstone. shale. shale. Other rock types include claystone , conglomerate , dolomite , and oil shale .. shale. shale. rock types. lithology. claystone. claystone. conglomerate. conglomerate ( geology ). dolomite. dolomite. oil shale. oil shale. It is typically regarded as Permian -- Triassic in age , although its original description included Jurassic rocks .. Permian. Permian. Triassic. Triassic. The Spearfish Formation is interpreted as representing shallow marine to coastal terrestrial deposition , like the modern Persian Gulf .. Persian Gulf. Persian Gulf. Depositional environments may have included restricted marine bodies and ephemeral lakes -LRB- gypsum -RRB- , hypersaline waters -LRB- limestone -RRB- , hypersaline microbial mats -LRB- oil shale -RRB- , and sabkhas -LRB- dolomite -RRB- .. gypsum. gypsum. shale. shale. dolomite. dolomite. oil shale. oil shale. hypersaline. hypersaline. The marine waters of the shallow continental sea retreated during the deposition of the formation , reflected in a change from dominantly nearshore marine to coastal terrestrial deposition over time .. formation. Formation ( geology ). The Spearfish Formation is sparsely fossiliferous .. So far , only stromatolites , casts of bivalves , and trace fossils have been found .
not_related.