Where is the Bank 1 oxygen sensor located in a 1997 Oldsmobile Cutlass Supreme?

In a 1997 Oldsmobile Cutlass Supreme, the Bank 1 oxygen sensor is located on the engine's exhaust manifold or just downstream in the exhaust system. Specifically, it is positioned before the catalytic converter on the side of the engine that corresponds to cylinder bank 1, which is typically the driver's side for this vehicle. Accessing it may require some maneuvering due to limited space in the engine compartment.