Question: What mobile ad company founded by Eric Litman was acquired by a British multinational advertising and public relations company?

Context paragraphs:
Havas: Havas (] ) is a French multinational advertising and public relations company, headquartered in Paris, France.  It operates in more than 100 countries and is one of the largest global advertising and communications groups in the world.  Havas consists of two main operational divisions:

Public relations: Public relations (PR) is the practice of managing the spread of information between an individual or an organization (such as a business, government agency, or a nonprofit organization) and the public.  Public relations may include an organization or individual gaining exposure to their audiences using topics of public interest and news items that do not require direct payment.  This differentiates it from advertising as a form of marketing communications.  Public relations is the idea of creating coverage for clients for free, rather than marketing or advertising.  An example of good public relations would be generating an article featuring a client, rather than paying for the client to be advertised next to the article.  The aim of public relations is to inform the public, prospective customers, investors, partners, employees, and other stakeholders and ultimately persuade them to maintain a positive or favorable view about the organization, its leadership, products, or political decisions.  Public relations professionals typically work for PR and marketing firms, businesses and companies, government, and public officials as PIOs and nongovernmental organizations, and nonprofit organizations.  Jobs central to public relations include account coordinator, account executive, account supervisor, and media relations manager.  Public relation is an action of convincing people.  The PR person talks with others that make them think about the things the person wants them to think, and the people regard the person as their believes.  Public relations helps people to build up the connection to media and society that they can talk steadily.

Edward Howard (public relations firm): Edward Howard was an Ohio-based public relations, investor relations, marketing communications and graphic design firm that opened in 1925.  The company was acquired by Fahlgren Inc. in March 2010 and officially joined forces with Fahlgren’s public relations business unit, Fahlgren Mortine Public Relations, on June 28, 2010.  With the acquisition of Edward Howard, Fahlgren Mortine became the largest public relations firm in Ohio and is ranked 22nd on the recent O’Dwyer’s ranking of top independent public relations firms.

Publicis: Publicis Groupe is a French multinational advertising and public relations company, and is the oldest and one of the largest marketing and communications companies in the world, by revenue, headquartered in Paris.

Hamish McLennan: Hamish McLennan (born 13 June 1966) is an Australasian businessman, who is chairman of REA Group, a global online real estate advertising company, a non executive director of the $50 billion Magellan Financial Group and advisor to technology company, Tiger Pistol headquartered in Austin, Texas.  He was previously Executive Vice President, Office of the Chairman, News Corporation, and Chairman of Young & Rubicam (Y&R), the largest division of Y&R Brands which is in turn owned by WPP plc a British multinational advertising and public relations company.  He was also previously Chief Executive Officer and Managing Director of Australian Media company Ten Network Holdings.

WPP plc: WPP plc, (Wire and Plastic Products) is a British multinational advertising and public relations company with its main management office in London, England, and its executive office in Dublin, Ireland.  It owns a number of advertising, public relations and market research networks, including IMRB, Millward Brown, Grey, Burson-Marsteller, Hill & Knowlton, JWT, Ogilvy & Mather, TNS, Young & Rubicam and Cohn & Wolfe.

George L. San Jose: George L. San Jose is the Founder and Chief Creative Officer of the multicultural marketing and advertising agency, The San Jose Group, public relations company SJ Public Relations and international marketing company, San Jose Consulting.

Eric Litman: Eric Austin Litman (born August 1, 1973) is an American entrepreneur and angel investor.  Litman co-founded Proxicom, built Viaduct from a one-man shop through a merger with the Wolf Group, and was the founder and CEO of Medialets, a mobile ad serving and advertising analytics company acquired by WPP plc.

Ampersand Communications: Ampersand Communications Ltd is a Liverpool-based company that specialises in Design, Marketing and Public Relations.  It was founded in 2001 by Sue Sherman and Emma Blackmoore.  It is now Liverpool's leading Public Relations company.

NativeX: NativeX (formerly W3i) is a Minnesota-based mobile advertising platform company.  Its product allows developers to integrate advertisements into mobile games.  The company was listed in American City Business Journals' Fast 50 as one of the fastest growing companies in Minneapolis–Saint Paul for 2013.  In 2014 the company announced an initiative to pay developers $30,000 in cash if they did not achieve a 30% increase in ad revenue.  On March 1, 2016, NativeX announced that it has been acquired by Mobvista, the largest mobile ad network company in Asia, for $24.5 million.

Supporting paragraphs: Eric Litman WPP plc
Answer: Medialets