"""Create reasoning_engine
Generated by Phi-Octopus Eden
2025-11-06 21:01:06.528029
"""

```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."""
        if fact not in self.knowledge:
            self.knowledge[fact] = []

    def retrieve_facts(self, pattern: str) -> List[str]:
        """Retrieve facts that match the given pattern."""
        return [fact for fact in self.knowledge.keys() if pattern.lower() in fact.lower()]

    def derive_conclusion(self, premises: List[str]) -> Optional[str]:
        """
        Derive a conclusion from the provided premises.

        Args:
            premises (List[str]): A list of premise facts to use for reasoning.
        
        Returns:
            Optional[str]: The derived conclusion if found, otherwise None.
        """
        for fact in self.knowledge.values():
            if all(premise in fact for premise in premises):
                return " AND ".join(premises) + " -> " + ", ".join(fact)
        return None


def create_reasoning_engine() -> KnowledgeBase:
    """Create and initialize a basic reasoning engine."""
    reasoning_engine = KnowledgeBase()
    
    # Adding some example facts
    reasoning_engine.add_fact("All humans are mortal")
    reasoning_engine.add_fact("Socrates is a human")
    reasoning_engine.add_fact("Therefore, Socrates is mortal")

    return reasoning_engine


# Example usage:
reasoning_engine = create_reasoning_engine()

print(reasoning_engine.derive_conclusion(["All humans are mortal", "Socrates is a human"]))
```

This example demonstrates a simple reasoning engine that adds facts to a knowledge base and can derive conclusions based on those facts.