Question: On May 4, 2012, who acquired the company which in 2004 acquired the Sweetheart Cup Company?

Context paragraphs:
Indiana and Ohio Railway: The Indiana and Ohio Railway (reporting mark IORY) is an American railroad that operates 570 mi of track in Ohio, southern Michigan, and parts of southeastern Indiana.  It is owned and operated by Genesee & Wyoming, who acquired the railroad in the 2012 purchase of RailAmerica.  The Indiana and Ohio Railroad (reporting mark INOH) (merged into the IORY in 1997) was formed in 1978 to operate a branch between Valley Junction, Ohio and Brookville, Indiana.  The IORY's original line, acquired in 1985, connected Mason and Monroe, Ohio.  The IORY set up a tourist operation known as the Indiana and Ohio Scenic Railway which operated over this line.  The tourist train still operates out of Lebanon, Ohio under the ownership of the Cincinnati Railway Company (CRC) under the name Lebanon Mason Monroe Railroad.  Another line, acquired in 1986, runs from Norwood to Brecon, Ohio.  In 1991, the former DT&I between Washington Court House, Ohio and Springfield, Ohio came into the system via a designated operator agreement with the West Central Ohio Port Authority.  The system expanded north into Michigan in 1997 when it acquired the remainder of the former DT&I mainline between Diann, Michigan and Springfield, Ohio.  In 1994, it acquired two lines from Conrail in Springfield, Ohio: one between Springfield and Bellefontaine; and one between Springfield and Mechanicsburg.  The Indiana and Ohio Central Railroad (reporting mark IOCR) was the designated owner of these two lines until 2004.  One of the I&O's major events took place in 1996 when it was acquired by RailTex.  In 2000 RailTex was absorbed by RailAmerica and in 2004 the I&O absorbed the Indiana and Ohio Central Railroad.  Genesee & Wyoming acquired RailAmerica in December 2012.

New World Pasta: The New World Pasta Company is the largest retail branded pasta manufacturer in North America in terms of sales and a wholly owned subsidiary of Ebro Foods.  New World Pasta headquarters are in Harrisburg, Pennsylvania.  The company was formed in 1999 when it divested to a private equity group from The Hershey Company.  After spinning off Hershey's pasta business to the newly formed company, New World Pasta acquired the four remaining brands of Borden's pasta business in July 2001 that the American Italian Pasta Company did not purchase a month earlier (Prince, Creamette, Catelli, and Lancia).  New World Pasta declared bankruptcy in 2004, and in 2006, the company was acquired by Ebro Puleva S.A., a food company based in Spain.  As part of Ebro Puleva, New World Pasta acquired Strom Products in 2012, including the No Yolks and Wacky Mac brands.

Monster Energy NASCAR Cup Series: The Monster Energy NASCAR Cup Series (often shortened to the Cup Series) is the top racing series of the National Association for Stock Car Auto Racing (NASCAR).  It is named for the current sponsor, Monster Energy, but has been known by other names in the past.  The series began in 1949 as the Strictly Stock Series, and from 1950 to 1970 it was known as the Grand National Series.  In 1971, when the series began leasing its naming rights to the R. J. Reynolds Tobacco Company, it was referred to as the Winston Cup Series.  A similar deal was made with Nextel in 2003, and it became the Nextel Cup Series (2004–2007).  Sprint acquired Nextel in 2005, and in 2008 the series was renamed the Sprint Cup Series, which lasted until 2016.  In December 2016, it was announced that Monster Energy would become the new title sponsor starting in 2017.

Paul A. Paddock: Paul A. Paddock (June 2, 1974 – May 4, 2016) was an American painter and sculptor based in New York City.  He is best known for his watercolors and works on paper.  The style of his work is reminiscent of children's book illustrations, but it plays with ideas about sex and interpersonal relationships, innocence, transgression, sin, and violence.  The work draws from American popular culture and from the artist's own experiences, dreams, and fantasies.  He was represented by the BUIA gallery in New York City from 2004 to 2009 and by the Frosch and Portmann gallery from 2011 to 2016.  He died on May 4, 2016, after a brief illness.  He was 41 years old.

BORN Group: BORN Group or BORN, formerly known as Group FMG, is a creative design, content production and commerce solutions company.  It started in 1987 as The Fresh Media Group.  The company created a multi-channel marketing content platform called Ceros, a page-turning digital magazine/catalog that embeds dynamic content, social media and ecommerce.  In June 2012 Kara Swisher reported that Crowdfusion had acquired Ceros.  In May 2012, the company acquired an award winning creative commerce agency, called Pod1 Inc.

Sweetheart Cup Company: Sweetheart Cup Company was a North America company that made paper cups, plastic cups and related products.  In 2004, Sweetheart was acquired by the Solo Cup Company.

Travel Channel International: Travel Channel International Limited (abbr.  TCI) is a commercial television broadcasting company headquartered in London, United Kingdom.  The company operates travel-themed television channels in the EMEA regions and Asia Pacific, spanning 21 on-air languages, under the Travel Channel brand.  Despite the name, it had no relation with the American television channel of the same name, until the company was acquired in May 2012 by Scripps Networks Interactive in Knoxville, United States, which acquired the American channel in 2009.

Truviso: Truviso (pronounced "true-VEE-so") is a continuous analytics, venture-backed, startup headquartered in Foster City, California developing and supporting its solution leveraging PostgreSQL, to deliver a proprietary analytics solutions for net-centric customers.  Truviso was acquired by Cisco Systems, Inc. on May 4, 2012.

Victor Prather: Lieutenant Commander Victor Alonzo Prather Jr. (June 4, 1926 – May 4, 1961) was an American flight surgeon famous for taking part in "Project RAM", a government project to develop the space suit.  On May 4, 1961, Prather drowned during the helicopter transfer after the landing of the Strato-Lab V balloon flight, which set an altitude record for manned balloon flight which stood until 2012.

Solo Cup Company: Solo Cup Company is an American manufacturer of disposable consumer products including beverage cups, disposable plates and bowls.  Solo Cup Company is located in Lake Forest, Illinois, and in 2006 had sales of $2.4 billion.  On May 4, 2012, Solo Cup Company was acquired by Dart Container.

Supporting paragraphs: Sweetheart Cup Company Solo Cup Company
Answer: Dart Container