Your task is to improve a Biology experimental protocol plan represented in domain-specific language (DSL) based on provided feedback.
The input plan in DSL consists of multiple DSL programs, each representing one step in the experimental protocol planning process, arranged in top-down order to indicate the execution sequence of operations. 
Each DSL program has the following format:
{
    "Operation": ,    // Operation verb
    "Precond": {      // Precondition for this step
        "SlotArgNum": ,   // Number of arguments for the precondition
        "SlotArg":        // Input product for this step
    },
    "Execution": {
        "DeviceType": ,   // Execution device for the operation
        "Config": {       // dict of execution arguments - values
            Argkey: Argvalues  
        }
    },
    "Postcond": {     // Postcondition for this step
        "EmitArgNum":,    // Number of arguments for the postcondition
        "EmitArg":        // Output product for this step
    }
}

Output your refined plan in DSL, returning a JSON block without any additional information or comments.
Start with ```json and end with ```

YOUR TASK:
Refine the plan in DSL for a protocol for {title}.

Here are some extra details about the protocol:

{details}

Refine the following plan:

{plan}

Here is the feedback of the plan:

{feedback}

Your refined plan in DSL: