"""Create reasoning_engine
Generated by Phi-Octopus Eden
2025-11-08 01:58:45.231540
"""

```python
from typing import List, Optional


class KnowledgeBase:
    def __init__(self):
        self.knowledge = []

    def add_fact(self, fact: str) -> None:
        """
        Adds a fact to the knowledge base.

        :param fact: A string representing a factual statement.
        """
        self.knowledge.append(fact)

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

        :return: A list of strings, each representing a stored fact.
        """
        return self.knowledge


class ReasoningEngine:
    def __init__(self):
        self.kb = KnowledgeBase()

    def add_facts(self, *facts: str) -> None:
        """
        Adds multiple facts to the knowledge base.

        :param facts: A variable number of string arguments representing factual statements.
        """
        for fact in facts:
            self.kb.add_fact(fact)

    def infer(self, premise: str) -> Optional[str]:
        """
        Infers a conclusion based on the current set of facts and a given premise.

        :param premise: A string representing a logical premise to use in inference.
        :return: The inferred conclusion as a string if valid, otherwise None.
        """
        for fact in self.kb.get_facts():
            if fact.endswith(premise):
                return fact  # Simple match condition
        return None


# Example usage:
reasoning_engine = ReasoningEngine()
reasoning_engine.add_facts("All humans are mortal.", "Socrates is a human.")
inferred_conclusion = reasoning_engine.infer("is a human.")

print(inferred_conclusion)  # Should print: Socrates is a human.
```