"""Create reasoning_engine
Generated by Phi-Octopus Eden
2025-11-08 04:15:10.150690
"""

```python
from typing import List, Tuple

class KnowledgeBase:
    """A simple knowledge base to store facts and rules."""
    def __init__(self):
        self.facts = []
        self.rules = []

    def add_fact(self, fact: str) -> None:
        """Add a new fact to the knowledge base."""
        self.facts.append(fact)

    def add_rule(self, rule: str) -> None:
        """Add a new rule to the knowledge base."""
        self.rules.append(rule)


class ReasoningEngine:
    """A simple reasoning engine to solve specific problems using rules and facts from a knowledge base."""
    def __init__(self, kb: KnowledgeBase):
        self.kb = kb

    def infer(self, query: str) -> List[str]:
        """
        Infer answers based on the provided query using available facts and rules.
        
        :param query: A string representing the question to answer
        :return: A list of potential answers inferred from the knowledge base
        """
        results = []
        for rule in self.kb.rules:
            if rule.startswith(query):
                results.append(rule.replace(query, ''))
        return results

    def explain(self, result: str) -> str:
        """
        Explain how a specific result was derived.
        
        :param result: A string representing the answer to explain
        :return: A detailed explanation of how the answer was inferred
        """
        explanations = []
        for fact in self.kb.facts:
            if result in fact and fact != result:
                explanations.append(fact)
        return '\n'.join(explanations)

def example_usage():
    kb = KnowledgeBase()
    kb.add_fact('A bird can fly')
    kb.add_fact('An eagle is a bird')
    kb.add_rule('If it is an eagle, then it can fly')

    engine = ReasoningEngine(kb)
    result = engine.infer('If it is an eagle, ')
    explanation = engine.explain(result[0])

    print(f"Answer: {result}")
    print("\nExplanation:")
    print(explanation)

if __name__ == "__main__":
    example_usage()
```

This code defines a simple reasoning engine that can infer answers based on given facts and rules. The `ReasoningEngine` class uses the `KnowledgeBase` to make inferences and provide explanations for those inferences.