"""Create reasoning_engine
Generated by Phi-Octopus Eden
2025-11-06 17:37:56.200046
"""

```python
from typing import List, Dict

class ReasoningEngine:
    """
    A basic reasoning engine that evaluates statements based on predefined rules.
    """

    def __init__(self):
        self.knowledge_base: Dict[str, bool] = {}
    
    def add_rule(self, rule: str, conclusion: bool) -> None:
        """
        Add a new rule to the knowledge base.

        Parameters:
        - rule (str): A string representation of the rule.
        - conclusion (bool): The result of the evaluation based on this rule.
        """
        self.knowledge_base[rule] = conclusion

    def evaluate(self, statement: str) -> bool:
        """
        Evaluate a given statement using existing rules.

        Parameters:
        - statement (str): A string representation of the statement to be evaluated.

        Returns:
        - bool: True if the statement is true according to the rules, False otherwise.
        """
        return self.knowledge_base.get(statement, False)

    def add_multiple_rules(self, rules: Dict[str, bool]) -> None:
        """
        Add multiple rules to the knowledge base at once.

        Parameters:
        - rules (Dict[str, bool]): A dictionary of rules where keys are statements and values are their conclusions.
        """
        self.knowledge_base.update(rules)

def example_usage() -> None:
    # Create a new reasoning engine
    reasoner = ReasoningEngine()

    # Add some rules to the knowledge base
    reasoner.add_rule("A is true", True)
    reasoner.add_rule("B is false", False)
    
    # Add multiple rules at once
    more_rules = {
        "C is true": True,
        "D and E are both true": True,  # Assuming D and E are already in the knowledge base as true
    }
    reasoner.add_multiple_rules(more_rules)

    # Evaluate statements based on the added rules
    print(reasoner.evaluate("A is true"))  # Should return True
    print(reasoner.evaluate("B is false"))  # Should return False

# Run example usage if this script is executed directly
if __name__ == "__main__":
    example_usage()
```

This code defines a simple reasoning engine that can add rules to its knowledge base and evaluate statements based on those rules. The `example_usage` function demonstrates how to use the `ReasoningEngine` class by adding some rules and evaluating statements.