[Q]: Margarita la tornera (Margarita the Gatekeeper) is an opera in three acts composed by Ruperto Chapi to a libretto by Carlos Fernandez Shaw, based on a dramatic poem by Jose Zorrilla. It premiered on February 24, 1909 at the Teatro Real in Madrid in a performance conducted by the composer. An acclaimed recording of the opera came out in 1999 with Placido Domingo and Elisabete Matos. Margarita the Gatekeeper premiered in Madrid.
[A]: Yes

[Q]: The 2014 Rialto Channel New Zealand Film Awards was the third presentation of the New Zealand Film Awards, a New Zealand film industry award. The 2014 ceremony took place in Shed 10 on Queen's Wharf in Auckland on Friday 12 December 2014. It was webcast live at the nzherald.co.nz, and later broadcast on the Rialto Channel. The New Zealand Film Awards will be held in the summer or winter.
[A]: It's impossible to say

[Q]: Princess Maria Gabriella of Savoy (Maria Gabriella Giuseppa Aldegonda Adelaide Ludovica Felicita Gennara; born 24 February 1940) is the middle daughter of Italy's last king, Umberto II, and Marie Jose of Belgium, the "May Queen", and a sister of the pretender to their father's throne, Vittorio Emanuele, Prince of Naples. She is an historical writer. She was a historical writer
[A]: Yes

[Q]: Helvering v. Horst, 311 U.S. 112 (1940) , is an opinion of the United States Supreme Court which further developed the "fruit-and-tree" metaphor established in "Lucas v. Earl", 281 U.S. 111 (1930) . "Horst" is the leading case that applies the assignment of income doctrine to income from property. Helvering v. Horst, 311 U.S. 112 (1940) has a connection with "Lucas v. Earl", 281 U.S. 111 (1930) .
[A]:
Yes