code: def process_corpus(self):
  		
  		for doc in self.corpus_list:
  			doc = wt(doc)
  			sentence = []
  			for word in doc:
  				if word not in self.stop_words and word not in self.punctuation:
  					word = self.stemmer.stem(word)
  					sentence.append(word)
  			self.processed_corpus.append(sentence)
docs: Q.process_corpus() -- processes the queries defined by us, 
  		by tokenizing, stemming, and removing stop words.