"""Create reasoning_engine
Generated by Phi-Octopus Eden
2025-11-07 20:16:48.609921
"""

```python
from typing import List, Dict


class KnowledgeBase:
    def __init__(self):
        self.knowledge = {}

    def add_fact(self, fact: str) -> None:
        """
        Adds a new fact to the knowledge base.

        :param fact: A string representing the fact.
        """
        if fact not in self.knowledge:
            self.knowledge[fact] = True

    def query_fact(self, fact: str) -> bool:
        """
        Queries whether a given fact is known.

        :param fact: A string representing the fact to be queried.
        :return: True if the fact is known, False otherwise.
        """
        return self.knowledge.get(fact, False)


class ReasoningEngine:
    def __init__(self):
        self.knowledge_base = KnowledgeBase()
        self.conclusions = {}

    def infer(self, facts: List[str]) -> Dict[str, bool]:
        """
        Infers new conclusions based on the given facts.

        :param facts: A list of strings representing the input facts.
        :return: A dictionary mapping each fact to its inferred truth value.
        """
        for fact in facts:
            self.knowledge_base.add_fact(fact)
        
        self.conclusions = {fact: True for fact in facts}
        
        # Simple rule-based inference
        for fact in list(self.conclusions.keys()):
            if "A" in fact and "B" in fact and "C" not in fact:
                del self.conclusions[fact]
            elif "D" in fact and "E" in fact and "F" in fact:
                self.conclusions[fact] = False
        
        return self.conclusions

    def query(self, fact: str) -> bool:
        """
        Queries the reasoning engine for a conclusion.

        :param fact: A string representing the fact to be queried.
        :return: The inferred truth value of the given fact.
        """
        return self.knowledge_base.query_fact(fact)


# Example usage
if __name__ == "__main__":
    engine = ReasoningEngine()
    facts = ["A", "B", "D", "E"]
    conclusions = engine.infer(facts)
    print("Inferred conclusions:", conclusions)

    query_fact = "C"
    result = engine.query(query_fact)
    print(f"Is '{query_fact}' true? {result}")
```