Question: When did chemical attacks happen in the country where some foreign inhabitants of the country the winner of the women's gold in curling are from in 2017?

<P0-S0> Games Gold Silver Bronze 1998 Nagano details Canada (CAN) Sandra Schmirler Jan Betker Joan McCusker Marcia Gudereit Atina Ford Denmark (DEN) Helena Blach Lavrsen Margit Pörtner Dorthe Holm Trine Qvist Jane Bidstrup Sweden (SWE) Elisabet Gustafson Katarina Nyberg Louise Marmont Elisabeth Persson Margaretha Lindahl 2002 Salt Lake City details Great Britain (GBR) Rhona Martin Deborah Knox Fiona MacDonald Janice Rankin Margaret Morton Switzerland (SUI) Luzia Ebnöther Mirjam Ott Tanya Frei Laurence Bidaud Nadia Röthlisberger Canada (CAN) Kelley Law Julie Skinner Georgina Wheatcroft Diane Nelson Cheryl Noble 2006 Turin details Sweden (SWE) Anette Norberg Eva Lund Cathrine Lindahl Anna Svärd Ulrika Bergman Switzerland (SUI) Mirjam Ott Binia Beeli Valeria Spälty Michèle Moser Manuela Kormann Canada (CAN) Shannon Kleibrink Amy Nixon Glenys Bakker Christine Keshen Sandra Jenkins 2010 Vancouver details Sweden (SWE) Anette Norberg Eva Lund Cathrine Lindahl Anna Le Moine Kajsa Bergström Canada (CAN) Cheryl Bernard Susan O'Connor Carolyn Darbyshire Cori Bartel Kristie Moore China (CHN) Wang Bingyu Liu Yin Yue Qingshuang Zhou Yan Liu Jinli 2014 Sochi details Canada (CAN) Jennifer Jones Kaitlyn Lawes Jill Officer Dawn McEwen Kirsten Wall Sweden (SWE) Margaretha Sigfridsson Maria Prytz Christina Bertrup Maria Wennerström Agnes Knochenhauer Great Britain (GBR) Eve Muirhead Anna Sloan Vicki Adams Claire Hamilton Lauren Gray 2018 Pyeongchang details Sweden (SWE) Anna Hasselborg Sara McManus Agnes Knochenhauer Sofia Mabergs Jennie Wåhlin South Korea (KOR) Kim Eun - jung Kim Kyeong - ae Kim Seon - yeong Kim Yeong - mi Kim Cho - hi Japan (JPN) Satsuki Fujisawa Chinami Yoshida Yumi Suzuki Yurika Yoshida Mari Motohashi <SEP> <P1-S0> The Khan Shaykhun chemical attack took place on 4 April 2017 on the town of Khan Shaykhun in the Idlib Governorate of Syria. <P1-S1> At the time of the attack, the town was under the control of Tahrir al - Sham, previously known as the al - Nusra Front. <SEP> <P2-S0> tug of war was contested as a team event in the summer olympics at every olympiad from 1900 to 1920. originally the competition was entered by groups called clubs. <P2-S1> a country could enter more than one club in the competition, making it possible for one country to earn multiple medals. <P2-S2> this happened in 1904, when the united states won all three medals, and in 1908 when the podium was occupied by three british teams. <P2-S3> sweden was also among the top countries with two medals, one as a member of the mixed team. <SEP> <P3-S0> born in moose jaw, saskatchewan, she was part of team schmirler, the women's curling team that won a gold medal at the 1998 winter olympics. <P3-S1> this team is the only 3-time winner of the world curling championship (1993, 1994, 1997). <P3-S2> after sandra died, she remained in the team, now skipped by jan betker for whom she currently plays. <P3-S3> she curls out of the caledonia curling club in regina, saskatchewan and works as a systems analyst for the co-operators. <SEP> <P4-S0> Between 1820 and 1930, approximately 1.3 million Swedes, a third of the country's population at the time, emigrated to North America, and most of them to the United States. <P4-S1> There are more than 4.4 million Swedish Americans according to a 2006 US Census Bureau estimate. <P4-S2> In Canada, the community of Swedish ancestry is 330,000 strong.There are no official statistics on ethnicity, but according to Statistics Sweden, around 3,193,089 (31.5%) inhabitants of Sweden were of a foreign background in 2017, defined as being born abroad or born in Sweden with at least one parent born abroad. <P4-S3> The most common countries of origin were Syria (1.70%), Finland (1.49%), Iraq (1.39%), Poland (0.90%), Iran (0.73%) and Somalia (0.66%). <P4-S4> Sweden subsequently has one of the oldest populations in the world, with the average age of 41.1 years.