Question: Which company has employed both Jeff Bonforte and Marissa Mayer?

full_context: Document 1: YouTube: YouTube is an American video-sharing website headquartered in San Bruno, California. The service was created by three former PayPal employees — Chad Hurley, Steve Chen, and Jawed Karim — in February 2005. Google bought the site in November 2006 for US$1.65 billion; YouTube now operates as one of Google's subsidiaries.
Document 2: Synacor: Synacor Inc. is a technology and services company headquartered in Buffalo, New York. It provides managed portals and apps, advertising, email, authentication, and OTT video services. The company was founded in 1998 as Chek.com and changed its name to Synacor in 2001. Himesh Bhise currently serves as the CEO and William Stuart currently serves as the CFO. Beyond Buffalo, the company has offices in Boston, Dallas, London, New York City, Ottawa, Pune, San Francisco, Singapore, Tokyo, and Toronto. In 2012, Synacor became a public company (NASDAQ: SYNC ) with an initial public offering (IPO) of $5.00 per share. In 2015, Synacor acquired Zimbra, an open source email, calendaring, and collaboration software suite. In the same year, Synacor acquired NimbleTV. In 2016, Synacor displaced Yahoo! as the portal provider for AT&T and was selected to provide authentication for HBO Go.
Document 3: Jeff Bonforte: Jeff Bonforte is a Senior Vice President of Communications Products at Yahoo!, responsible for Yahoo! Mail, Yahoo! Messenger, Yahoo! Groups, Yahoo! Contacts and Yahoo! Calendar. Before that he was Chief executive officer (CEO) of Xobni, a company that Yahoo! bought in July 2013.
Document 4: Robby Stein: Robby Stein is director of product at Yahoo. Previously he used to work for Google and was co-founder and CEO of Stamped, Marissa Mayer's first acquisition as CEO of Yahoo.
Document 5: EBay: eBay Inc. ( , stylized as ebay) is a multinational e-commerce corporation, facilitating online consumer-to-consumer and business-to-consumer sales. It is headquartered in San Jose, California. eBay was founded by Pierre Omidyar in 1995, and became a notable success story of the dot-com bubble. Today it is a multibillion-dollar business with operations in about 30 countries.
Document 6: Web.com (1995 – 2007): Web.com, Inc, formerly Interland, Interland was founded by Waldemar Fernandez and Ken Gavranovic in 1997 out of Atlanta Georgia. Mr. Fernandez the Chairman and largest shareholder resigned in 2000 shortly after Interland went public, Interland a provider of websites and web services to small businesses and consumers, based in Atlanta, Georgia. Web.com's services included do-it-yourself and professional website design, web hosting, e-commerce, web marketing, and e-mail. As of March 2007, there were approximately 166,000 paid hosting subscribers in 2007.
Document 7: Sprint Corporation: Sprint Corporation, commonly referred to as Sprint, is an American telecommunications holding company that provides wireless services and is an internet service provider. It is the fourth largest mobile network operator in the United States, and serves 59.7 million customers, as of April 2017. The company also offers wireless voice, messaging, and broadband services through its various subsidiaries under the Boost Mobile, Virgin Mobile, and Assurance Wireless brands, and wholesale access to its wireless networks to mobile virtual network operators. The company is headquartered in Overland Park, Kansas. In July 2013, a majority of the company was purchased by Japanese telecommunications company SoftBank Group Corp., although the remaining shares of the company continue to trade on the New York Stock Exchange.
Document 8: Yahoo! Japan: Yahoo! Japan Corporation (ヤフー株式会社 , Yafū Kabushiki-gaisha ) is a Japanese internet company originally formed as a joint venture between the American internet company Yahoo! (now Altaba) and the Japanese company SoftBank. It is headquartered at Kioi Tower in the Tokyo Garden Terrace Kioicho complex in Kioicho, Chiyoda, Tokyo. Yahoo! Japan's web portal is the most visited website in Japan, and its internet services are mostly dominant in the country.
Document 9: Terry Semel: Terry Semel (born February 24, 1943) is an American corporate executive who was the chairman and CEO of Yahoo! Incorporated from 2001 to 2007. Previously, he spent 24 years at Warner Bros., where he served as chairman and co-chief executive officer. He resigned as CEO due in part to pressure from shareholders' dissatisfaction over his compensation (in 2006, salary $1, stock options worth $70 million) and performance. He is also the founder of Windsor Media which has produced "Rules Don't Apply" starring Lily Collins and Warren Beatty.
Document 10: Marissa Mayer: Marissa "Ann" Mayer ( ; born May 30, 1975) is an American information technology executive, formerly serving as the president and CEO of Yahoo!, a position she had held starting July 2012. In January 2017, it was announced that she will step down from the company's board upon the sale of Yahoo!'s operating business to Verizon Communications. She announced that resignation on June 13, 2017. She is a graduate of Stanford and was a long-time executive, usability leader, and key spokesperson for Google.
Document 11: AOL: AOL (formerly a company known as AOL Inc., originally known as America Online, and stylized as Aol) is a web portal and online service provider based in New York. It is a brand marketed by Oath, a subsidiary of Verizon Communications. AOL was one of the early pioneers of the Internet in the mid-1990s, and the most recognized brand on the web in the U.S. It originally provided a dial-up service to millions of Americans, as well as providing a web portal, e-mail, instant messaging and later a web browser following its purchase of Netscape. At the height of its popularity, it purchased the media conglomerate Time Warner in the largest merger in U.S. history. AOL rapidly declined thereafter, partly due to the decline of dial-up to broadband. AOL was eventually spun off from Time Warner in 2009, with Tim Armstrong appointed the new CEO. Under his leadership, the company invested in media brands and advertising technologies.
Document 12: Yahoo!: Yahoo! is a web services provider, wholly owned by Verizon Communications through Oath Inc. and headquartered in Sunnyvale, California. The original Yahoo! company was founded by Jerry Yang and David Filo in January 1994 and was incorporated on March 2, 1995. Yahoo was one of the pioneers of the early Internet era in the 1990s. Marissa Mayer, a former Google executive, served as CEO and President of Yahoo until June 2017.
Document 13: Vik Singh: Vik Singh is the CEO and co-founder of Infer, a leading predictive sales and marketing platform. Vik was previously an American Entrepreneur In Residence at Sutter Hill Ventures. Previously, Vik helped create and architect Yahoo! Search BOSS, an open web search platform. As of April 2009, the number of queries issued through BOSS surpassed the search traffic on Ask and Facebook combined.
Document 14: Michael J. Callahan: Michael J. Callahan is the former general counsel, executive vice president and corporate secretary at Yahoo!. He joined Yahoo! in December 1999 as corporate and securities lawyer, and served as Yahoo!'s top lawyer from 2003 to 2012. In this capacity, he played a role on a number of strategic and corporate governance issues, such as the hostile takeover battle with Microsoft, served as a key adviser to Yahoo!'s CEOs over the years, and was involved in patent settlement negotiations with Facebook.
Document 15: Ashfaq Munshi: Ashfaq Munshi is an entrepreneur and technology executive. In 2012, Ashfaq served as the CTO of Yahoo! before Marissa Mayer took over as CEO. Before that he was the Interim Chief Executive Officer and President of MSC Software in 2009. Ashfaq was an advisor to Kontagent, Inc. (now Upsight, Inc.) and has served as an advisor to a variety of startups. He was also on the Dean's Leadership Council for the Division of Engineering and Applied Sciences at Harvard University.
ground_truth: Yahoo!