def find_left_anchor_index(fragment_info, fragments):
    """
    Description:
    Use the fragment information to find which fragment is the left anchor
    :param fragment_info: [list[dict]] the list of fragment information
    :param fragments: [list] the list of fragments being searched
    :return: left_anchor_index: [int] the index location in the fragment list for the left anchor fragment
    """
    for info in fragment_info:
        if len(info['left_matches']) == 0:
            left_anchor_index = fragments.index(info['anchor'])
            return left_anchor_index