Input: Article: In 1906, precipitation hardening alloys were discovered by Alfred Wilm. Precipitation hardening alloys, such as certain alloys of aluminium, titanium, and copper, are heat-treatable alloys that soften when quenched (cooled quickly), and then harden over time. After quenching a ternary alloy of aluminium, copper, and magnesium, Wilm discovered that the alloy increased in hardness when left to age at room temperature. Although an explanation for the phenomenon was not provided until 1919, duralumin was one of the first "age hardening" alloys to be used, and was soon followed by many others. Because they often exhibit a combination of high strength and low weight, these alloys became widely used in many forms of industry, including the construction of modern aircraft.

Now answer this question: When were precipitation hardening alloys discovered?

Output: 1906

Input: Article: With the deactivation of USS Enterprise in December 2012, the U.S. fleet comprises 10 supercarriers. The House Armed Services Seapower subcommittee on 24 July 2007, recommended seven or maybe eight new carriers (one every four years). However, the debate has deepened over budgeting for the $1214.5 billion (plus $12 billion for development and research) for the 100,000 ton Gerald R. Ford-class carrier (estimated service 2016) compared to the smaller $2 billion 45,000 ton America-class amphibious assault ships, which are able to deploy squadrons of F-35Bs. The first of this class, USS America, is now in active service with another, USS Tripoli, under construction and 9 more are planned.

Now answer this question: What is the USS America capable of destroying squadrons of?

Output: F-35Bs

Input: Article: Starting in the 1980s, he travelled with his all-female Amazonian Guard, who were allegedly sworn to a life of celibacy. However, according to psychologist Seham Sergewa, after the civil war several of the guards told her they had been pressured into joining and raped by Gaddafi and senior officials. He hired several Ukrainian nurses to care for him and his family's health, and traveled everywhere with his trusted Ukrainian nurse Halyna Kolotnytska. Kolotnytska's daughter denied the suggestion that the relationship was anything but professional.

Now answer this question: What sort of relationship did Gaddafi have with Halyna Kolotnytska?

Output:
professional