dictionary that is structured as the one from 2.

    What is "label-like" key? We first search for an case-insensitive match of 'labels' inside the keys of the
    dictionary. This is the name our detection models expect. If we can't find that, we look for a case-insensitive
    match of the term 'label' anywhere inside the key, i.e. 'FooLaBeLBar'. If we can't find that either, the dictionary
    contains no "label-like" key.
    r