def search_dict_of_lists(value, dictionary):
    """
    Search through a dictionary of lists for a given value.

    Parameters
    ----------

    value: Any data-type.
        The value that we are searching for in the lists.

    dictionary: Dictionary of lists.
        A dictionary of lists we're searching through. 
 
    Returns
    ----------

    True
        If the value is in the dictionary.

    False
        Otherwise.

    Examples
    ----------

    >>> my_dict = {'People' : ['John', 'Mary', 'Joseph'],
    ...            'Age'    : [21, 8, 87],
    ...            'Height' : [186.4, 203.1, 87.8]}
    >>> search_dict_of_lists("John", my_dict)
    True

    >>> search_dict_of_lists("Carol", my_dict)
    False

    >>> search_dict_of_lists(87, my_dict)
    True

    >>> search_dict_of_lists(5, my_dict)
    False

    >>> search_dict_of_lists(186.4, my_dict)
    True

    >>> search_dict_of_lists(186.9, my_dict)
    False
    """
    
    for key in dictionary.keys():
        if value in dictionary[key]:
            return True

    return False