"""Create reasoning_engine
Generated by Phi-Octopus Eden
2025-11-05 22:27:59.278554
"""

```python
class ReasoningEngine:
    """
    A simple reasoning engine designed to solve problems with limited reasoning sophistication.
    
    Attributes:
        knowledge_base (dict): Stores facts and rules for reasoning.
        inference_rules (list of functions): Contains simple logical inference functions.
        
    Methods:
        __init__(self, kb: dict = {}, rules: list = []):
            Initializes the ReasoningEngine with a given knowledge base and inference rules.
        add_fact(self, fact: str) -> None:
            Adds a new fact to the knowledge base.
        infer_new_facts(self) -> None:
            Applies inference rules to derive new facts from existing ones.
    """
    
    def __init__(self, kb: dict = {}, rules: list = []):
        self.knowledge_base = kb
        self.inference_rules = rules

    def add_fact(self, fact: str) -> None:
        """Add a new fact to the knowledge base."""
        if fact not in self.knowledge_base:
            print(f"Adding fact: {fact}")
            self.knowledge_base[fact] = True
    
    def infer_new_facts(self) -> None:
        """
        Apply inference rules to derive new facts from existing ones.
        
        Example rule (rule format is a function that takes the knowledge base and returns a new fact):
        def rule1(kb):
            if "A" in kb and "B" in kb:
                return "C"
        """
        for rule in self.inference_rules:
            result = rule(self.knowledge_base)
            if result and result not in self.knowledge_base:
                print(f"Inferred new fact: {result}")
                self.add_fact(result)

# Example usage

def simple_inference(kb):
    """Simple inference that derives C from A and B."""
    if "A" in kb and "B" in kb:
        return "C"

engine = ReasoningEngine()
engine.add_fact("A")
engine.add_fact("B")

print("Initial KB:", engine.knowledge_base)

# Define new inference rules
engine.inference_rules.append(simple_inference)

# Run the reasoning process to infer new facts
engine.infer_new_facts()

print("Final KB after inference:", engine.knowledge_base)
```

This code creates a simple `ReasoningEngine` class that can add facts and derive new facts using predefined inference rules. The example usage demonstrates adding some initial facts, defining an inference rule, and running the reasoning process to infer new facts from the existing knowledge base.