Problem: The Davis Cup is a challenge trophy contested by men in which sport?
Answer: tennis

Problem: What smartphone operating system increased its market share from 4% in 2009 to 70% in 2013?
Answer: android

Problem: What historic region of Croatia, Bosnia and Herzegovina, and Montenegro, gave its name to a dog breed with a striking appearance?
Answer: dalmatia

Problem: Elizabeth Ashton, Fritz Ligges, Josef Neckermann, Bridget Parker, Mark Phillips and Harvey Smith competed in what sports at the 1972 Olympic Ganes?
Answer:
equestrian