[Q]: Arthur John Duckworth (born 19 January 1949) is a former Australian rules footballer who played for Fitzroy in the Victorian Football League (VFL), West Perth in the West Australian National Football League (WANFL), and Central District in the South Australian National Football League (SANFL). He is the older brother of former Essendon footballer Billy Duckworth. Arthur John Duckworth was born before 1950
[A]: Yes

[Q]: Mary Isobel Downer, Lady Downer (13 December 1924 14 October 2014) was a prominent South Australian patron, wife of federal MP and high commissioner Sir Alexander "Alick" Downer, and mother of Liberal Party leader, Australian Foreign Minister and high commissioner Alexander Downer. Mary Isobel Downer, Lady Downer talked to Dan.
[A]: It's impossible to say

[Q]: Homebrew is a free and open-source software package management system that simplifies the installation of software on Apple's macOS operating system. Originally written by Max Howell, the package manager has gained popularity in the Ruby on Rails community and earned praise for its extensibility. Homebrew has been recommended for its ease of use as well as its integration into the command line. There are other open-source software package management systems
[A]: It's impossible to say

[Q]: Joel Rueben Madden (born Joel Rueben Combs; March 11, 1979) is the lead vocalist for the American pop punk band Good Charlotte, as well as a record producer, actor, DJ, and UNICEF Goodwill Ambassador. He is also part of the pop rock collaboration The Madden Brothers with his twin brother Benji Madden. Joel Rueben Madden was popular worldwide
[A]:
It's impossible to say