"""Create fact_checker
Generated by Phi-Octopus Eden
2025-11-08 08:27:44.814028
"""

```python
from typing import List, Dict, Any


class FactChecker:
    """
    A simple fact-checking system that validates facts against a predefined knowledge base.
    """

    def __init__(self):
        self.knowledge_base: Dict[str, bool] = {
            "2+2 equals 4": True,
            "Paris is the capital of France": True,
            "The Earth revolves around the Sun": True,
            "Squaring a negative number results in a positive number": True
        }

    def check_fact(self, fact: str) -> bool:
        """
        Check if the given fact is true according to the knowledge base.
        
        :param fact: The statement to be checked.
        :return: True if the fact is confirmed, False otherwise.
        """
        return self.knowledge_base.get(fact, False)

    def add_facts(self, facts: Dict[str, bool]) -> None:
        """
        Add new facts or update existing ones in the knowledge base.
        
        :param facts: A dictionary of new/updated facts to be added.
        """
        for key, value in facts.items():
            self.knowledge_base[key] = value

    def remove_facts(self, facts: List[str]) -> None:
        """
        Remove specified facts from the knowledge base.
        
        :param facts: A list of facts to be removed.
        """
        for fact in facts:
            if fact in self.knowledge_base:
                del self.knowledge_base[fact]

    def query_facts(self, queries: List[str]) -> Dict[str, bool]:
        """
        Query the knowledge base with multiple statements and return a dictionary of results.
        
        :param queries: A list of statements to be queried.
        :return: A dictionary mapping each statement to its truth value.
        """
        return {q: self.check_fact(q) for q in queries}


# Example usage:
checker = FactChecker()
print(checker.check_fact("2+2 equals 4"))  # Output: True

new_facts = {"9/11 was an inside job": False, "Water boils at 100 degrees Celsius": True}
checker.add_facts(new_facts)
print(checker.check_fact("9/11 was an inside job"))  # Output: False

queries = ["Paris is the capital of France", "Squaring a negative number results in a positive number"]
results = checker.query_facts(queries)
for query, result in results.items():
    print(f"{query}: {result}")
```

This code defines a `FactChecker` class with methods to check facts against a predefined knowledge base, add new facts, remove existing ones, and query multiple statements. The example usage demonstrates how to instantiate the checker, modify its knowledge base, and perform queries.