Problem: Does "The rainfall is very unreliable and erratic in the Sahara as it may vary considerably year by year." answer the question "What is the average rainfall of the Sahara?" OPTIONS:
- yes
- no

A: no

Problem: Does "By the beginning of the 20th century, the trans-Saharan trade had clearly declined because goods were moved through more modern and efficient means, such as airplanes, rather than across the desert." answer the question "What time period did the colonialism of the Sahara begin?" OPTIONS:
- yes
- no

A: no

Problem: Does "By 2009, under 40% of the players in the Premier League were English." answer the question "By 2000-01, what percentage of players in the Premier League were from outside the UK and Ireland?" OPTIONS:
- yes
- no

A:
no