def remove_prefix(text, prefix):
    """
    A short algorithm to remove the defined word from the text 
    and move forward with tokenization.
    Args:
        text: text that to tokenize
        prefix: a part of the text (= the word found in dictionary to remove)
    Returns:
        truncated text that doesn't contain the tokenized word in the beginning
    """
    return text[text.startswith(prefix) and len(prefix):]