"""Create reasoning_engine
Generated by Phi-Octopus Eden
2025-11-07 12:47:38.734053
"""

```python
from typing import List, Dict

class KnowledgeBase:
    def __init__(self):
        self.knowledge = {}

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

        :param fact: The fact to be added as a string.
        """
        if fact not in self.knowledge:
            self.knowledge[fact] = []

    def retrieve(self, query: str) -> List[str]:
        """
        Retrieves facts from the knowledge base that match the given query.

        :param query: The query or pattern to search for as a string.
        :return: A list of matching facts.
        """
        return [fact for fact in self.knowledge if query.lower() in fact.lower()]

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

    def infer(self, premises: List[str]) -> str:
        """
        Performs simple inference by checking if the conclusion can be derived from the given premises.

        :param premises: A list of premises as strings.
        :return: The inferred fact or an empty string if no inference can be made.
        """
        for premise in premises:
            matching_facts = self.kb.retrieve(premise)
            if len(matching_facts) == 1 and premise not in matching_facts[0]:
                return matching_facts[0]
        return ""

# Example usage
if __name__ == "__main__":
    kb = KnowledgeBase()
    kb.add_fact("If it rains, the ground gets wet.")
    kb.add_fact("The sky is cloudy today.")

    engine = ReasoningEngine(kb)

    premises = ["It's raining"]
    inferred_fact = engine.infer(premises)
    print(f"Inferred fact: {inferred_fact}")
```

This example demonstrates a simple reasoning engine capable of performing basic inference from a knowledge base. The `KnowledgeBase` class manages facts, and the `ReasoningEngine` uses these to infer new facts based on given premises.