Q: Does "He was also attracted to the singing student Konstancja Gadkowska." provide a valid answer to "Which singer was cited specifically as someone Frederic was attracted to?"?
OPTIONS:
- yes
- no
A: yes

Q: Does "Although the exact pre-contact population of the Americas is unknown, scholars estimate that Native American populations diminished by between 80 and 90% within the first centuries of contact with Europeans." provide a valid answer to "How much did the population of the Americas decrease after first contact with the Europeans?"?
OPTIONS:
- yes
- no
A: yes

Q: Does "In the run-up to the London 2012 Summer Olympic Games and London 2012 Summer Paralympic Games, Eton's purpose-built Dorney Lake, a permanent, eight-lane, 2,200 metre course (about 1.4 miles) in a 400-acre park, officially known throughout the Games as Eton Dorney, provided training facilities for Olympic and Paralympic competitors, and during the Games, hosted the Olympic and Paralympic Rowing competitions as well as the Olympic Canoe Sprint event, attracting over 400,000 visitors during the Games period (around 30,000 per day), and voted the best 2012 Olympic venue by spectators." provide a valid answer to "How much does it cost to attend Eton Dorney throughout the year?"?
OPTIONS:
- yes
- no
A: no

Q: Does "Although due to considerable design issues, it was soon replaced in 1991 with the first of the PowerBook line: the PowerBook 100, a miniaturized portable; the 16 MHz 68030 PowerBook 140; and the 25 MHz 68030 PowerBook 170." provide a valid answer to "Which generation of PowerBooks introduced trackpads?"?
OPTIONS:
- yes
- no
A:
no