import random
import logging
from typing import List, Optional

logging.basicConfig(level=logging.INFO)

def generate_hypothesis(subject: str, predicate: str, object: str) -> Optional[str]:
    """
    Generates a hypothesis string from the given subject, predicate, and object.

    Args:
        subject: The subject of the hypothesis.
        predicate: The predicate of the hypothesis.
        object: The object of the hypothesis.

    Returns:
        A hypothesis string, or None if there is an error.
    """
    try:
        if not all([subject, predicate, object]):
            raise ValueError("Subject, predicate, and object must be non-empty strings.")

        hypothesis = f"It is hypothesized that {subject} {predicate} {object}."
        logging.info(f"Generated hypothesis: {hypothesis}")
        return hypothesis
    except ValueError as e:
        logging.error(f"Error generating hypothesis: {e}")
        return None
    except Exception as e:
        logging.error(f"An unexpected error occurred: {e}")
        return None

if __name__ == '__main__':
    # Example Usage
    hypothesis1 = generate_hypothesis("the AI system", "will improve", "over time")
    if hypothesis1:
        print(hypothesis1)

    hypothesis2 = generate_hypothesis("", "will fail", "miserably")
    if hypothesis2:
        print(hypothesis2)