article_snippet.sent: We look at things like the accounts and conversations that are popular among people you follow, tweets from people you're closely tied to, topics and events that are trending in your area or within your network, and people that are popular or trending among people you follow,' Luk said.
highlights_snippet.sent: Works based on accounts and topics popular among people you follow .
  
highlights_snippet.sent: It also looks at tweets from people you're closely tied to or in your area .