With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Facebook is a social networking utility.
text_B: Facebook is an American for-profit corporation and an online social media and social networking service based in Menlo Park , California .. social networking service. social networking service. for-profit corporation. for-profit corporation. social media. social media. The Facebook website was launched on February 4 , 2004 , by Mark Zuckerberg , along with fellow Harvard College students and roommates , Eduardo Saverin , Andrew McCollum , Dustin Moskovitz , and Chris Hughes .. Mark Zuckerberg. Mark Zuckerberg. Eduardo Saverin. Eduardo Saverin. Andrew McCollum. Andrew McCollum. Dustin Moskovitz. Dustin Moskovitz. Chris Hughes. Chris Hughes. Harvard College. Harvard College. The founders had initially limited the website 's membership to Harvard students ; however , later they expanded it to higher education institutions in the Boston area , the Ivy League schools , and Stanford University .. higher education institutions in the Boston area. List of colleges and universities in metropolitan Boston. Ivy League. Ivy League. Stanford University. Stanford University. Facebook gradually added support for students at various other universities , and eventually to high school students as well .. Since 2006 , anyone age 13 and older has been allowed to become a registered user of Facebook , though variations exist in the minimum age requirement , depending on applicable local laws .. The Facebook name comes from the face book directories often given to United States university students .. face book. face book. Facebook may be accessed by a large range of desktops , laptops , tablet computers , and smartphones over the Internet and mobile networks .. Internet. Internet. After registering to use the site , users can create a user profile indicating their name , occupation , schools attended and so on .. user profile. user profile. Users can add other users as `` friends '' , exchange messages , post status updates and digital photos , share digital videos and links , use various software applications -LRB- `` apps '' -RRB- , and receive notifications when others update their profiles or make posts .. software applications. software applications. Additionally , users may join common-interest user groups organized by workplace , school , hobbies or other topics , and categorize their friends into lists such as `` People From Work '' or `` Close Friends '' .. In groups , editors can pin posts to top .. Additionally , users can complain about or block unpleasant people .. Because of the large volume of data that users submit to the service , Facebook has come under scrutiny for its privacy policies .. Facebook makes most of its revenue from advertisements which appear onscreen .. Facebook , Inc. held its initial public offering -LRB- IPO -RRB- in February 2012 , and began selling stock to the public three months later , reaching an original peak market capitalization of $ 104 billion .. initial public offering. initial public offering. stock. stock. market capitalization. market capitalization. On July 13 , 2015 , Facebook became the fastest company in the Standard & Poor 's 500 Index to reach a market cap of $ 250 billion .. Facebook has more than 1.94 billion monthly active users as of March 31 , 2017 .. 1.94 billion monthly active users. List of virtual communities with more than 100 million active users. As of April 2016 , Facebook was the most popular social networking site in the world , based on the number of active user accounts .. Facebook classifies users from the ages of 13 to 18 as minors and therefore sets their profiles to share content with friends only .
related.