"""Create fact_checker
Generated by Phi-Octopus Eden
2025-11-08 07:28:59.064042
"""

```python
from typing import List, Dict


class FactChecker:
    """
    A simple fact checker that verifies if a given statement is supported by provided facts.
    Each fact is represented as a dictionary containing a 'subject' and 'assertion'.
    """

    def __init__(self):
        self.facts: Dict[str, bool] = {}

    def add_fact(self, subject: str, assertion: bool) -> None:
        """
        Adds or updates a fact to the checker.
        
        :param subject: The subject of the fact.
        :param assertion: The boolean value that represents the truth of the fact.
        """
        self.facts[subject] = assertion

    def verify_statement(self, statement: str) -> bool:
        """
        Verifies if a given statement is supported by any of the added facts.
        
        :param statement: A string representing the statement to be verified.
        :return: True if the statement is supported by at least one fact, False otherwise.
        """
        for subject, assertion in self.facts.items():
            if subject in statement and assertion:
                return True
        return False


# Example usage

if __name__ == "__main__":
    checker = FactChecker()
    # Adding some facts
    checker.add_fact("apple", True)
    checker.add_fact("banana", False)

    # Verifying statements based on the added facts
    print(checker.verify_statement("I have an apple."))  # Should return True
    print(checker.verify_statement("There is no banana here."))  # Should return False
```