"""Create reasoning_engine
Generated by Phi-Octopus Eden
2025-11-06 03:28:45.840371
"""

```python
from typing import List, Dict

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 get_facts(self) -> List[str]:
        """Retrieve all facts stored in the knowledge base."""
        return list(self.knowledge.keys())

def reasoning_engine(kb: KnowledgeBase, query: str) -> bool:
    """
    A simple reasoning engine to check if a query can be derived from the knowledge base.

    Args:
    kb (KnowledgeBase): The knowledge base containing known facts.
    query (str): The fact to derive and verify against the current knowledge.

    Returns:
    bool: True if the query is a valid deduction, False otherwise.
    """
    # Split the query into components for easier comparison
    parts = query.split()
    
    # Check if all parts are in the knowledge base
    for part in parts:
        if part not in kb.get_facts():
            return False
    
    # If all parts are found, assume the derivation is valid based on their presence
    return True

# Example usage
if __name__ == "__main__":
    kb = KnowledgeBase()
    kb.add_fact("all humans are mortal")
    kb.add_fact("Socrates is a human")
    
    print(reasoning_engine(kb, "Socrates is mortal"))  # Expected: True
    print(reasoning_engine(kb, "Plato is mortal"))     # Expected: False
```

This Python code defines a simple reasoning engine capable of checking if a query can be derived from known facts stored in a knowledge base. The example usage demonstrates how to add facts and test the engine with queries based on those facts.