"""Create fact_checker
Generated by Phi-Octopus Eden
2025-11-08 14:21:54.694714
"""

```python
from typing import List, Dict


class FactChecker:
    """
    A simple fact-checking system for validating statements against a predefined knowledge base.
    """

    def __init__(self, knowledge_base: Dict[str, bool]):
        """
        Initialize the FactChecker with a knowledge base.

        :param knowledge_base: A dictionary mapping facts to their boolean truth values.
        """
        self.knowledge_base = knowledge_base

    def check_fact(self, fact: str) -> bool:
        """
        Check if a given fact is true based on the knowledge base.

        :param fact: The statement to verify as a string.
        :return: True if the fact is in the knowledge base and is marked as True, False otherwise.
        """
        return self.knowledge_base.get(fact, False)

    def check_facts(self, facts: List[str]) -> Dict[str, bool]:
        """
        Check multiple facts against the knowledge base.

        :param facts: A list of statements to verify.
        :return: A dictionary mapping each fact to its truth value as found in the knowledge base.
        """
        return {fact: self.check_fact(fact) for fact in facts}

    def add_facts(self, new_knowledge_base: Dict[str, bool]):
        """
        Add or update facts in the knowledge base.

        :param new_knowledge_base: A dictionary of new facts and their truth values to be added.
        """
        self.knowledge_base.update(new_knowledge_base)


# Example Usage
if __name__ == "__main__":
    # Define a simple knowledge base
    knowledge_base = {
        "The Earth revolves around the Sun": True,
        "The moon orbits the Earth": True,
        "Pluto is a planet": False,
        "Water boils at 100 degrees Celsius": True
    }

    # Create a fact checker instance
    fact_checker = FactChecker(knowledge_base)

    # Check individual facts
    print(fact_checker.check_fact("The moon orbits the Earth"))  # Output: True

    # Check multiple facts
    print(fact_checker.check_facts(["Pluto is a planet", "Earth has two moons"]))  # Output: {'Pluto is a planet': False, 'Earth has two moons': False}

    # Add new knowledge and check again
    new_knowledge_base = {
        "Earth's largest moon": True,
        "Pluto is now classified as a dwarf planet": True
    }
    fact_checker.add_facts(new_knowledge_base)

    print(fact_checker.check_facts(["Pluto is now classified as a dwarf planet", "Mars has two moons"]))  # Output: {'Pluto is now classified as a dwarf planet': True, 'Mars has two moons': False}
```