Article: According to the dominant cosmological model, the Lambda-CDM model, less than 5% of the universe's energy density is made up of the "matter" described by the Standard Model of Particle Physics, and the majority of the universe is composed of dark matter and dark energy - with little agreement amongst scientists about what these are made of.

Question: Which model suggests that matter is 5% of the universe?
Ans: Lambda-CDM model


Article: During his tour on the guided missile frigate USS Gridley, Kerry requested duty in South Vietnam, listing as his first preference a position as the commander of a Fast Patrol Craft (PCF), also known as a "Swift boat." These 50-foot (15 m) boats have aluminum hulls and have little or no armor, but are heavily armed and rely on speed. "I didn't really want to get involved in the war", Kerry said in a book of Vietnam reminiscences published in 1986. "When I signed up for the swift boats, they had very little to do with the war. They were engaged in coastal patrolling and that's what I thought I was going to be doing." However, his second choice of billet was on a river patrol boat, or "PBR", which at the time was serving a more dangerous duty on the rivers of Vietnam.

Question: How long were swift boats?
Ans: 50-foot


Article: When paying a state visit to Britain, foreign heads of state are usually entertained by the Queen at Buckingham Palace. They are allocated a large suite of rooms known as the Belgian Suite, situated at the foot of the Minister's Staircase, on the ground floor of the north-facing Garden Wing. The rooms of the suite are linked by narrow corridors, one of them is given extra height and perspective by saucer domes designed by Nash in the style of Soane. A second corridor in the suite has Gothic influenced cross over vaulting. The Belgian Rooms themselves were decorated in their present style and named after Prince Albert's uncle Léopold I, first King of the Belgians. In 1936, the suite briefly became the private apartments of the palace when they were occupied by King Edward VIII.

Question: The Belgian Suite is located at the bottom of which staircase?
Ans: Minister's Staircase


Article: Guest judges may occasionally be introduced. In season two, guest judges such as Lionel Richie and Robin Gibb were used, and in season three Donna Summer, Quentin Tarantino and some of the mentors also joined as judges to critique the performances in the final rounds. Guest judges were used in the audition rounds for seasons four, six, nine, and fourteen such as Gene Simmons and LL Cool J in season four, Jewel and Olivia Newton-John in season six, Shania Twain in season eight, Neil Patrick Harris, Avril Lavigne and Katy Perry in season nine, and season eight runner-up, Adam Lambert, in season fourteen.

Question: Which season eight contestant was a guest judge in season fourteen?
Ans:
Adam Lambert