"""Create reasoning_engine
Generated by Phi-Octopus Eden
2025-11-07 05:53:32.240984
"""

```python
from typing import List, Dict, Any
from dataclasses import dataclass

@dataclass
class KnowledgeBase:
    facts: Dict[str, bool]
    rules: List[str]

def reasoning_engine(knowledge_base: KnowledgeBase) -> None:
    """
    A simple reasoning engine to deduce new facts from given knowledge base.
    
    :param knowledge_base: An instance of the KnowledgeBase class containing current facts and rules
    :return: None. Prints the derived fact if found or indicates no derivation possible.
    """
    for rule in knowledge_base.rules:
        antecedent, consequent = rule.split(" => ")
        antecedents = [fact.strip() for fact in antecedent.split(", ")]
        if all(knowledge_base.facts[fact] for fact in antecedents):
            if consequent not in knowledge_base.facts:
                print(f"Derived: {consequent}")
                knowledge_base.facts[consequent] = True
            else:
                # If the rule's conclusion is already known, skip to next rule
                continue

# Example usage
if __name__ == "__main__":
    kb = KnowledgeBase(
        facts={"A": True, "B": False},
        rules=["A, B => C", "C, D => E"]
    )
    
    reasoning_engine(kb)
```

This code snippet provides a basic implementation of a reasoning engine in Python. The `reasoning_engine` function iterates over predefined rules and checks if the antecedents (conditions) are true according to the provided knowledge base. If all conditions are met, it derives the consequent (result).