"""Create reasoning_engine
Generated by Phi-Octopus Eden
2025-11-07 23:55:03.142486
"""

```python
from typing import List, Optional
from dataclasses import dataclass


@dataclass
class KnowledgeBase:
    facts: List[str]
    rules: List[str]

    def add_fact(self, fact: str) -> None:
        self.facts.append(fact)

    def apply_rule(self, rule: str) -> Optional[str]:
        """
        Applies a logical rule to the current set of facts and returns
        the conclusion if true.
        
        :param rule: A string representation of a logical rule.
        :return: The concluded fact if rule is satisfied, otherwise None.
        """
        for fact in self.facts:
            # Simple matching logic based on fact presence
            if rule in fact:
                return fact
        return None


class ReasoningEngine:
    def __init__(self):
        self.knowledge_base = KnowledgeBase(facts=[], rules=[])

    def add_fact(self, new_fact: str) -> None:
        """
        Adds a new fact to the knowledge base.
        
        :param new_fact: A string representation of a new fact.
        """
        self.knowledge_base.add_fact(new_fact=new_fact)

    def define_rule(self, rule: str) -> None:
        """
        Defines and adds a logical rule to the rules list in the knowledge base.
        
        :param rule: A string representation of a logical rule.
        """
        self.knowledge_base.rules.append(rule)

    def infer_conclusion(self, rule: str) -> Optional[str]:
        """
        Attempts to infer a conclusion based on existing facts and a defined rule.
        
        :param rule: The rule to apply for inference.
        :return: The concluded fact if the rule is satisfied, otherwise None.
        """
        return self.knowledge_base.apply_rule(rule=rule)

    def print_knowledge(self) -> None:
        """
        Prints all current facts and rules in the knowledge base.
        """
        print("Facts:")
        for fact in self.knowledge_base.facts:
            print(f" - {fact}")
        
        print("\nRules:")
        for rule in self.knowledge_base.rules:
            print(f" - {rule}")


# Example usage
if __name__ == "__main__":
    reasoning_engine = ReasoningEngine()
    
    # Adding facts to the knowledge base
    reasoning_engine.add_fact("All mammals are warm-blooded.")
    reasoning_engine.add_fact("Whales are mammals.")
    
    # Defining a rule
    reasoning_engine.define_rule("If whales are mammals, then they are warm-blooded.")
    
    # Inferring conclusions from rules and facts
    print(reasoning_engine.infer_conclusion("If whales are mammals, then they are warm-blooded."))
```

This code defines a `ReasoningEngine` class that can add facts to its knowledge base, define logical rules, and infer conclusions based on those facts and rules. The example usage demonstrates how to use the reasoning engine to reason about the nature of whales.