In the Tugu corpus, there are examples with an overt agent for the two values. In the example for a prototypical passive (Value 1), the agent NP is headed by the preposition di 'of', and in the non-prototypical passive example (Value 3), the agent noun is marked by the preposition ku 'with'.
Source: Philippe 2011: 100
Source: Philippe 2011: 98
Source: Philippe 2011: 100