def get_words_and_preds(sdp_lines):
    """
    Returns the words in the lines, split to columns.
    and the predicates (subset of words).
    """
    words = [line.strip().split("\t")
             for line in sdp_lines
             if (not line.startswith('#')) and \
             line.strip()]
    preds = [word
             for word in words
             if word[5] == '+']
    return (words, preds)