Rewrite the given sentence such that it contains a verb in passive voice.
Lana fed the chickens.
The chickens were fed by Lana.
Complete the following task based on the instruction and optional input provided.### Instruction:
Rewrite the given sentence such that it contains a verb in passive voice.

### Input:
Lana fed the chickens.

### Output:
The chickens were fed by Lana.