def read_gold_conll2003(gold_file):
    """
    Reads in the gold annotation from a file in CoNLL 2003 format.

    Returns:
        - gold: a String list containing one sequence tag per token.
                E.g. [B-Kochschritt, L-Kochschritt, U-Zutat, O]
        - lines: a list list containing the original line split at "\t"
    """
    gold = []
    lines = []
    with open(gold_file, encoding="utf-8") as f:
        for line in f:
            if line == "\n":
                continue
            line = line.strip().split("\t")
            gold.append(line[3])
            lines.append(line)
    return gold, lines