"""Create fact_checker
Generated by Phi-Octopus Eden
2025-11-08 04:25:42.832115
"""

```python
from typing import List, Dict


class FactChecker:
    """
    A simple fact-checking class that validates facts against a provided dataset.
    
    Attributes:
        data (Dict[str, str]): The dataset to check facts against.
    """

    def __init__(self, data: Dict[str, str]):
        self.data = data

    def validate_fact(self, statement: str) -> bool:
        """
        Validates if the given fact is present in the provided dataset.

        Args:
            statement (str): The fact to be checked.

        Returns:
            bool: True if the fact is valid, False otherwise.
        """
        return statement in self.data

    def check_facts(self, facts: List[str]) -> Dict[str, bool]:
        """
        Checks multiple facts against the provided dataset and returns a dictionary
        with each fact and its validation result.

        Args:
            facts (List[str]): The list of facts to be checked.

        Returns:
            Dict[str, bool]: A dictionary containing each fact and its validation status.
        """
        results = {fact: self.validate_fact(fact) for fact in facts}
        return results


# Example usage
if __name__ == "__main__":
    data = {
        "1984 is a novel": "George Orwell",
        "Pythagoras theorem states that c^2 = a^2 + b^2": "",
        "Water boils at 100 degrees Celsius": ""
    }
    
    fact_checker = FactChecker(data)
    facts_to_check = [
        "1984 is a novel", 
        "Pythagoras theorem states that c^2 = a^2 + b^2", 
        "Water freezes at -100 degrees Celsius"
    ]
    
    results = fact_checker.check_facts(facts_to_check)
    for fact, valid in results.items():
        print(f"{fact} is {'valid' if valid else 'invalid'}")
```

This Python code defines a `FactChecker` class that validates facts against a provided dataset. It includes methods to validate single and multiple facts, as well as an example usage demonstrating how to create an instance of the class and check several facts.