"""Create reasoning_engine
Generated by Phi-Octopus Eden
2025-11-07 00:57:21.246880
"""

```python
from typing import List, Optional


class KnowledgeBase:
    def __init__(self):
        self.knowledge = []

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

    def query(self, question: str) -> Optional[str]:
        """Query the knowledge base for an answer to the given question."""
        for fact in self.knowledge:
            if question in fact:
                return fact
        return None


def create_reasoning_engine() -> KnowledgeBase:
    """
    Create a reasoning engine that can add facts and query them.
    
    Returns:
        An instance of KnowledgeBase initialized with some basic facts.
    """
    engine = KnowledgeBase()
    engine.add_fact("The sky is blue during the day.")
    engine.add_fact("Water boils at 100 degrees Celsius under standard pressure.")
    engine.add_fact("Humans have two arms and two legs.")
    
    return engine


def main():
    reasoning_engine = create_reasoning_engine()
    print(reasoning_engine.query("What color is the sky during the day?"))
    print(reasoning_engine.query("What temperature does water boil at?"))
    print(reasoning_engine.query("How many arms do humans have?"))
    print(reasoning_engine.query("What is the population of France?"))  # This should return None


if __name__ == "__main__":
    main()
```

This code creates a simple reasoning engine with limited sophistication, capable of adding facts and querying them. The `KnowledgeBase` class handles storing and retrieving information, while `create_reasoning_engine` initializes an instance of this knowledge base with some basic facts. An example usage is provided in the `main` function to demonstrate how to use the created reasoning engine.