Problem: Enrique Leff (born Mexico, 1946) is a Mexican economist, who defines himself today as an environmental sociologist and environmentalist. He has written 25 books and 180 articles on political ecology, environmental sociology, environmental economics, environmental epistemology and environmental education. He is regarded as one of the key environmental thinkers in Latin America.

Based on the paragraph above can we conclude that "Leff was 50 years old when he wrote his book on political ecology."? OPTIONS:
- Yes
- It's impossible to say
- No

A: It's impossible to say

Problem: Udinese Calcio sensationally finished third in Serie A, much due to Oliver Bierhoff being in the form of his life, scoring 27 goals in a league season consisting of just 34 matches. Bierhoff, coach Alberto Zaccheroni and winger Thomas Helveg all left for Milan at the end of the season, ensuring Udinese had lots of work to do to stay at the level it was.

Based on the paragraph above can we conclude that "Udinese Calcio scpred more goals than the matches of the league,"? OPTIONS:
- Yes
- It's impossible to say
- No

A: No

Problem: New Day is a 1949 book by Jamaican author V. S. Reid. It was Reid's first novel. "New Day" deals with the political history of Jamaica as told by a character named Campbell, who is a boy at the time of the Morant Bay Rebellion (in 1865) and an old man during its final chapters. It may have been the first novel to use Jamaican vernacular as its language of narration.

Based on the paragraph above can we conclude that "The main character in the book is named Campbell, the story is about his life"? OPTIONS:
- Yes
- It's impossible to say
- No

A:
Yes