def _random_word_context(self, text, max_trial=10):
    puncs = list("[]!\"#$%&'()*+,./:;<=>?@\^_`{|}~-")
    words = text.split()

    trial = 0
    done = False
    while trial < max_trial and not done:
        trial += 1
        w_idx = random.randint(0, len(words) - 1)
        word, left_res, right_res = words[w_idx], [], []

        # If the word is already in vocab, it's good to go.
        if len(word) >= self.min_word_len and \
                (word.lower() in self.dictionary) and \
                len(word) < DEFAULT_MAX_CHARACTER_POSITIONS - 4:
            done = True
        else:
            # Otherwise, detach puncs at the first and the last char, and check again
            if word[0] in puncs:
                word, left_res = word[1:], [word[0]]
            else:
                word, left_res = word, []
            if not word: continue  # The word was just a punc

            if word[-1] in puncs:
                word, right_res = word[:-1], [word[-1]]
            else:
                word, right_res = word, []

            if len(word) < self.min_word_len or \
                    (not word.lower() in self.dictionary) or \
                    len(word) >= DEFAULT_MAX_CHARACTER_POSITIONS - 4:
                continue

            # Check whether it's anonymized field
            right_snip = ' '.join(words[w_idx + 1:w_idx + 5])
            if '**]' in right_snip and '[**' not in right_snip:
                continue
            left_snip = ' '.join(words[w_idx - 4:w_idx])
            if '[**' in left_snip and '**]' not in left_snip:
                continue

            # Pass!
            done = True

    if done:
        return word, ' '.join(words[:w_idx] + left_res), ' '.join(right_res + words[w_idx + 1:])
    else:
        raise ValueError('failed to choose word')