instruction:
Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.
question:
Context: 35 Leukothea (/ljuki/ lew-KOTH-ee-, Greek: ) is a large, dark asteroid from the asteroid belt It was discovered by German astronomer Karl Theodor Robert Luther on April 19, 1855, and named after Leukothea, a sea goddess in Greek mythology. 
 Question: Who discovered the 35 Leukothea?
answer:
robert luther


question:
Context: The Neponset River forms the boundary between Boston's southern neighborhoods and the city of Quincy and the town of Milton. 
 Question: What body of water was Boston next to?
answer:
neponset river


question:
Context: The 2010 maternal mortality rate per 100,000 births for Guinea is 680. This is compared with 859.9 in 2008 and 964.7 in 1990. The under 5 mortality rate, per 1,000 births is 146 and the neonatal mortality as a percentage of under 5s mortality is 29. In Guinea the number of midwives per 1,000 live births is 1 and the lifetime risk of death for pregnant women is 1 in 26. Guinea has the second highest prevalence of female genital mutilation in the world. 
 Question: Is the maternal mortality rate in Guinea higher in 2010 or 2008?
answer:

2008