"""Create fact_checker
Generated by Phi-Octopus Eden
2025-11-06 10:59:12.883991
"""

```python
from typing import List, Dict

class FactChecker:
    """
    A class for checking the validity of statements or claims.
    
    Attributes:
        knowledge_base (Dict[str, bool]): A dictionary storing known facts and their truth values.
        error_tolerance (int): The number of errors tolerated before considering a statement invalid.

    Methods:
        add_knowledge(knowledge: Dict[str, bool])
            Adds new factual information to the knowledge base.

        check_statement(statement: str) -> bool
            Checks if a given statement is supported by the current knowledge base.
        
        set_error_tolerance(tolerance: int)
            Sets the number of errors tolerated for a statement to be considered valid.
    """
    
    def __init__(self, error_tolerance: int = 1):
        self.knowledge_base: Dict[str, bool] = {}
        self.error_tolerance: int = error_tolerance
    
    def add_knowledge(self, knowledge: Dict[str, bool]) -> None:
        """Adds new factual information to the knowledge base."""
        for fact, truth_value in knowledge.items():
            self.knowledge_base[fact] = truth_value
    
    def check_statement(self, statement: str) -> bool:
        """
        Checks if a given statement is supported by the current knowledge base.
        
        Args:
            statement (str): The statement to be checked.

        Returns:
            bool: True if the statement is valid based on the knowledge base, False otherwise.
        """
        # This function can be expanded with more sophisticated error checking
        parts = statement.split()
        errors = 0
        for part in parts:
            if part not in self.knowledge_base or not self.knowledge_base[part]:
                errors += 1
        
        return errors <= self.error_tolerance
    
    def set_error_tolerance(self, tolerance: int) -> None:
        """Sets the number of errors tolerated for a statement to be considered valid."""
        self.error_tolerance = tolerance

# Example Usage
if __name__ == "__main__":
    fact_checker = FactChecker(error_tolerance=2)
    
    # Adding some knowledge
    fact_checker.add_knowledge({"apple": True, "fruit": True})
    
    print(fact_checker.check_statement("An apple is a fruit"))  # Should return True
    print(fact_checker.check_statement("Apples are vegetables"))  # Should return False due to error_tolerance of 2
    
    # Setting new error tolerance
    fact_checker.set_error_tolerance(1)
    print(fact_checker.check_statement("Apples are vegetables"))  # Now should return True as only one error is tolerated
```

This Python code defines a `FactChecker` class with methods to add factual information, check the validity of statements based on that knowledge base, and set an error tolerance level. The example usage demonstrates how to use this class in a practical scenario.