Problem: Text: Shielding gases fall into two categories--inert or semi-inert. Only two of the noble gases, helium and argon, are cost effective enough to be used in welding. These inert gases are used in gas tungsten arc welding, and also in gas metal arc welding for the welding of non-ferrous metals. Pure argon and helium are used only for some nonferrous metals. Semi-inert shielding gases, or active shield gases, include carbon dioxide, oxygen, nitrogen, and hydrogen. Most of these gases, in large quantities, would damage the weld, but when used in small, controlled quantities, can improve weld characteristics.

Question: can you use nitrogen as a shielding gas for welding?

OPTIONS:
- no
- yes
A: yes

Problem: Text: The Cathedral of St. Patrick (commonly called St. Patrick's Cathedral) is a decorated Neo-Gothic-style Roman Catholic cathedral church in the United States and a prominent landmark of New York City. It is the seat of the archbishop of the Roman Catholic Archdiocese of New York as well as parish church, located on the east side of Fifth Avenue between 50th and 51st Streets in Midtown Manhattan, directly across the street from Rockefeller Center, facing the Atlas statue. It is considered one of the most visible symbols of Roman Catholicism in New York City and the United States.

Question: is st patrick's cathedral in new york catholic?

OPTIONS:
- no
- yes
A: yes

Problem: Text: Lucky for Life (LFL) is a lottery drawing game (as of September 2017) available in 24 states and the District of Columbia. Lucky for Life, which began in 2009 in Connecticut as Lucky-4-Life, became a New England--wide game three years later, and added eleven lotteries during 2015. LFL's slogan is ''The Game of a Lifetime''. Drawings remain in Connecticut; Lucky for Life is drawn Mondays and Thursdays at 10:38 p.m. Eastern Time, using two drawing machines and numbered balls.

Question: is lucky for life a multi state game?

OPTIONS:
- no
- yes
A:
yes