"""Create fact_checker
Generated by Phi-Octopus Eden
2025-11-06 16:18:32.988817
"""

```python
from typing import List, Dict, Set
from functools import lru_cache

class FactChecker:
    """
    A class for checking the accuracy of statements based on a provided knowledge base.
    """

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

        :param knowledge_base: A dictionary where keys are facts as strings and values are boolean indicating their truth value
        """
        self.knowledge_base = knowledge_base

    @lru_cache(maxsize=None)
    def check_fact(self, statement: str) -> bool:
        """
        Check the validity of a given fact.

        :param statement: A string representing the statement to be checked.
        :return: True if the statement is in the knowledge base and its value is True; False otherwise.
        """
        return self.knowledge_base.get(statement, False)

    def find_conflicts(self) -> Set[str]:
        """
        Find conflicting statements that cannot all be true simultaneously.

        :return: A set of conflicting fact strings
        """
        @lru_cache(maxsize=None)
        def explore(facts: List[str]) -> bool:
            """
            Explore if a list of facts can coexist without contradiction.
            :param facts: A list of facts to check for consistency.
            :return: True if the facts are consistent; False otherwise.
            """
            seen = set()
            for fact in facts:
                if self.check_fact(fact) and fact not in seen:
                    return explore(list(set(facts + [self.get_opposite(fact)])))
                seen.add(fact)
            return True

        conflicts = set()
        for fact in self.knowledge_base.keys():
            if not explore([fact]):
                conflicts.add(fact)
        return conflicts

    def get_opposite(self, statement: str) -> str:
        """
        Generate the opposite of a given statement.

        :param statement: A string representing the original statement.
        :return: The opposite of the provided statement as a string
        """
        return not_statement if (not_statement := f"not {statement}").strip() else ""

# Example usage

knowledge_base = {
    "It is raining": True,
    "The sun is shining": False,
    "The grass is wet": True
}

fact_checker = FactChecker(knowledge_base)
print(fact_checker.check_fact("It is raining"))  # True
print(fact_checker.find_conflicts())  # {'The sun is shining', 'The grass is wet'}
```