"""Create fact_checker
Generated by Phi-Octopus Eden
2025-11-07 17:59:03.317052
"""

```python
from typing import List
from functools import lru_cache

class FactChecker:
    """
    A simple fact checker that validates statements based on predefined facts.
    It uses memoization to optimize for repeated checks of the same statement.

    Args:
        facts: A list of strings representing known truths.
    
    Methods:
        check_fact: Takes a string and returns True if it is a valid fact, False otherwise.
    """

    def __init__(self, facts: List[str]):
        self.facts = set(facts)

    @lru_cache(maxsize=128)
    def check_fact(self, statement: str) -> bool:
        """
        Checks if the provided statement matches any of the known facts.

        Args:
            statement: The string to be checked against known facts.

        Returns:
            A boolean indicating whether the statement is a valid fact.
        """
        return statement in self.facts

# Example Usage
if __name__ == "__main__":
    # Define some known truths
    known_facts = ["Paris is the capital of France", "The Earth orbits around the Sun"]
    
    # Create an instance of FactChecker with these facts
    fact_checker = FactChecker(known_facts)
    
    # Check a couple of statements
    print(fact_checker.check_fact("Paris is the capital of France"))  # Expected: True
    print(fact_checker.check_fact("Berlin is the capital of Germany"))  # Expected: Unknown, not in facts list
    
    # Using the fact_checker instance as a function
    assert callable(fact_checker)
```