Question: When was Schwartz working on the polot
About the article "Gossip Girl", section "Development".

Candidate passages:
Schwartz was born in 1976 in Providence, Rhode Island to Jewish parents: Steve and Honey Schwartz.
His parents were both toy inventors at Hasbro, working on the development of toys such as Transformers and My Little Pony, until they went on to start their own company.
Schwartz grew up on the East side of Providence, Rhode Island with a younger brother, Danny, and a younger sister, Katie.
Schwartz always had ambitions of being a writer since early childhood.
When Schwartz was seven years old, he won an essay-writing contest at sleep-away camp for a review of the recently released movie "Gremlins"; the opening line was "Spielberg has done it again" and stood out amongst the pile of essays from the other kids.
He even had a subscription to the entertainment industry newspaper "Variety" at age twelve.
He attended Providence's private Wheeler School, a coeducational independent day school, for 11 years, graduating with the class of 1994. 
Schwartz was born in a displaced persons camp to a Polish-speaking Jewish family of Holocaust survivors right after World War Two.
She emigrated to the U.S.A. with her parents and younger sister when she was two years old.
Schwartz was raised in Michigan, where she attended the Michigan State University.
She moved to California in her early twenties, where she also married.
Schwartz began doing research on the subject of non-Jewish Holocaust victims after she converted from Roman Catholicism to Judaism.
She began publishing in 1997.
Schwartz is also a practising artist and fine art photographer, as well as juried member of the Thousand Oaks Art Association.
The subject of history of the Holocaust related to the non-Jewish victims continues to be of great interest to her.
Schwartz is currently working on a second and more expanded volume on the non-Jewish victims. 
Rick Schwartz started as a volunteer zookeeper with primates at the Woodland Park Zoo in Seattle, Washington.
After that internship Schwartz went through the Exotic Animal Training & Management Program at Moorpark College.
In November 2000 Schwartz was hired on as a part-time keeper at the San Diego Zoo.
Six months later he was in a full-time position and moved into Senior Keeper status a few years later.
Near the end of 2008 the San Diego Zoo was looking to have a full-time Ambassador to represent the soon to open Elephant Odyssey - The largest new exhibit area to open in the history of the San Diego Zoo.
Schwartz was selected in late December 2008 and started as Ambassador in January 2009.
The position of Elephant Odyssey Ambassador grew into a full time role as national spokesperson for both the San Diego Zoo and the San Diego Zoo Safari Park.
Schwartz has been guest on Live!
with Kelly, NBC's "Today" and on "The Early Show" on CBS.
Schwartz continues to work as a zookeeper and Supervisor when not working as Ambassador. 
Schwartz was born in Smorgon in Belarus, then in the Russian Empire in 1896.
His parents were Samuel Schwartz and Tauba Reznikoff.
At the age of thirteen, he moved to the nearby city of Vilna to attend art school.
Four years later, he emigrated to the United States and eventually enrolled in the School of the Art Institute of Chicago.
After graduating, he put his art career on hold to concentrate on a budding career as an opera singer.
When Schwartz returned to painting, he distinguished himself with dreamy, symbolist works and abstractions that tended to bewilder viewers.
He also scandalized conservative audiences with numerous lithographs of nude women.
During the Great Depression, Schwartz became an artist on the Federal Art Project payroll.
Working under the supervision of Increase Robinson in Chicago, he painted Regionalist works showing the countryside and small-town American life.
It was not until the early 1940s that Schwartz returned to painting the esoteric imagery for which he had become known.
Greatly influenced by European surrealism, Schwartz painted strange biomorphic forms and apocalyptic scenes in many of his works.
He became a well-known figure in Chicago, mostly due to his memorable handlebar mustache and eccentric persona.
He was also one of a group of prominent Chicago artists—including Ivan Albright, Malvin Albright, and Aaron Bohrod—that hung out at Riccardo's Restaurant and Gallery during the 1940s and 1950s.
In his final years, Schwartz returned exclusively to painting abstracts; these paintings are considered among his best work.
Schwartz began suffering from Alzheimer's disease around 1970 and died in Chicago on February 10, 1977.
The Art Institute of Chicago and the Joslyn Art Museum in Omaha have several of Schwartz’s works in their permanent collections. 
Ari M. Schwartz is the Internet Policy Advisor at the National Institute of Standards and Technology, working on the Internet Policy Task Force at the Department of Commerce.
Schwartz was previously the vice president and chief operating officer of the Center for Democracy and Technology (CDT) in Washington, D.C., in the United States.
Schwartz is from the Detroit, Michigan area, and holds a bachelor's degree in sociology from Brandeis University.