from typing import Tuple


def process_grad_date(grad_date: str) -> Tuple[str, int]:
    """
    Infers the graduation semester and year from grad_date

    grad_date: str
        The graduation date in the format 'YYYY-MM-DD'

    Returns:
        A tuple of the semester and year.
    """
    year = grad_date[:4]
    month = grad_date[5:7]
    if month in ['04', '05', '06']:
        semester = 'Spring'
    elif month in ['07', '08', '09']:
        semester = 'Summer'
    elif month in ['11', '12', '01']:
        semester = 'Fall'
    else:
        semester = "None"

    return semester, int(year)