Question answering system

I am Shalini Ramesh who is interested in machine learning project. I am trying a chat bot. It is summarizing some articles and from that summary, provide answers for given questions. Here, given articles will be summarized and it takes keywords from questions. When questions are provided,it generate answers by matching keywords with summary. Up to now, i did summary part and retrieving keywords from questions. Now i need help to get answers by matching the keywords with summary. Best match should be retrieved as answer.