How to Build a Content based Search Engine per a user given Natural Language question $($a set of Topics to search$)$ in real$-$time over a million webpages under the domain of your company website. Describe each tasks to be done in three phases in terms of platform of your choice $($which database server to store maintain, knowledge base $($output$)$ format$/$scheme$),$ big data processing techniques for information Extraction, algorithm flow in data pipelining