class WordTrigger(Trigger):
    def __init__(self, word):
        self.word = word.lower()
    def isWordIn(self, text):
        text = text.lower()
        for char in text:
            if char in string.punctuation:
                text.replace(char,' ')
        text = text.split()
        return self.word in text

class TitleTrigger(WordTrigger):
    def evaluate(self, story):
        a_title = story.getTitle()
        return self.isWordIn(a_title)

class SubjectTrigger(WordTrigger):
    def evaluate(self, story):
        a_subject = story.getSubject()
        return self.isWordIn(a_subject)

class SummaryTrigger(WordTrigger):
    def evaluate(self, story):
        a_summary = story.getSummary()
        return self.isWordIn(a_summary)