What is the scope of municipal liability under the doctrine of failure to train theory?

Inadequate training may form the basis for a claim against supervisory personnel "only where the failure to train amounts to deliberate indifference to the rights of persons with whom the [trained personnel] come into contact." City of Canton v. Harris, 109 S.Ct. 1197, 1204 (1989) (defining scope of municipal liability under failure to train theory). "[T]he focus must be on the adequacy of the training program in relation to the tasks the particular officers must perform." Id. at 1205-06.