Aware (which can be downloaded from the above link) is an app that works a lot like Google Now on Tap, except for the fact that it is designed to analyse news articles and then present information about the main people in the article (for example,their wikipedia or instagram page).Moreover,it isn't restricted to devices running Android Marshmallow, but it is compatible with Jelly Bean forward (unlike Now on Tap). Try it, you might just like it