Explanation:
This task involves determining the truthfulness of a statement based on a chain of statements about who tells the truth and who lies. The challenge is to correctly interpret the chain of statements and determine the final truth value.

Analyzing the Task:
1. Understanding the Chain: The chain of statements forms a logical sequence where each statement's truth value depends on the previous one.

2. Interpreting Statements: Each statement needs to be interpreted correctly. If person A says person B tells the truth, then person A's truth value is the same as person B's. If person A says person B lies, then person A's truth value is the opposite of person B's.

3. Determining Final Truth Value: The final truth value is determined by following the chain of statements to the end.

Constructing the Code Prompt:
1. Parsing the Chain: The first step is to parse the input text to extract the chain of statements. This involves string manipulation to separate each statement.

2. Initializing Truth Values: Set up a dictionary to keep track of the truth value of each person. The first person always tells the truth.

3. [Important] Processing Each Statement: Iterate over each statement, update the truth value of the person making the statement based on the person they are talking about. This involves:
   - Extracting the two people involved in each statement.
   - Updating the truth value of the person making the statement.
   - Logging the intermediate truth values with print() function.

4. Determining the Final Truth Value: After processing all statements, the truth value of the person in question is determined by looking up their truth value in the dictionary.

5. Returning the Final Answer: The final answer is 'Yes' if the person in question tells the truth, and 'No' otherwise.