"""Create reasoning_engine
Generated by Phi-Octopus Eden
2025-11-06 23:27:42.914188
"""

```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."""
        self.knowledge.append(fact)

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

def reasoning_engine(kb: KnowledgeBase) -> Dict[str, bool]:
    """
    Enhance a simple knowledge base with a basic reasoning engine.
    
    Args:
        kb (KnowledgeBase): The knowledge base containing known facts.
        
    Returns:
        Dict[str, bool]: A dictionary mapping each fact to whether it is true or false based on the current state of the KB.
    """
    # Example problem: Determine if all facts are true
    truth_values = {fact: True for fact in kb.get_facts()}
    
    # Simple reasoning - check for any contradictions
    for i, fact1 in enumerate(kb.get_facts()):
        for j, fact2 in enumerate(kb.get_facts()):
            if i != j and not (fact1.startswith('not ') or fact2.startswith('not ')):
                if ('not ' + fact2) in kb.get_facts():
                    truth_values[fact1] = False
                    break
    
    return truth_values


# Example usage:
kb = KnowledgeBase()
kb.add_fact("The sky is blue.")
kb.add_fact("Grass is green.")
kb.add_fact("The cat likes to sleep.")

print(reasoning_engine(kb))
```

This code snippet creates a simple reasoning engine that adds basic logical consistency checking. It checks for contradictions where two statements cannot both be true, and sets the truth value of one of them to `False` if such a contradiction is found.