question: OPTIONS:
- yes
- no
The ability of birds to navigate during migrations cannot be fully explained by endogenous programming, even with the help of responses to environmental cues.
What are older migrating birds better at?

answer: no

[Q]: Sentence: Volcanic eruptions can occasionally be devastating, such as in the 1980 eruption of Mount St. Helens in Washington. Question: What year did Mt St. Helens erupt causing devastating damage? OPTIONS:
- yes
- no
++++++++++
[A]: yes

Q: Does "Stanley Schachter formulated his theory on the earlier work of a Spanish physician, Gregorio Maranon, who injected patients with epinephrine and subsequently asked them how they felt." provide a valid answer to "Whose work did the theory of Stanley Schachter build on?"?
OPTIONS:
- yes
- no
A: yes

Problem: Does "Also available to the Americans at the start of the war was the 120 mm M1 gun stratosphere gun, which was the most powerful AA gun with an impressive 60,000 ft (18 km) altitude capability." answer the question "What was the altitude range in feet of the stratosphere gun?" OPTIONS:
- yes
- no

A: yes

Does the sentence "When the Earth was young, probably about one-fifth of its uranium was uranium-235, but the percentage of 234U was probably much lower than this." provide a valid answer to the question "What fraction of the Earth's uranium was uranium-235 during the Earth's youth?" OPTIONS:
- yes
- no

A: yes

Does the sentence "After a nearly two-year process which involved potential buyers such as Mark Cuban and a group led by Hank Aaron, a family trust of TD Ameritrade founder Joe Ricketts won the bidding process as the 2009 season came to a close." provide a valid answer to the question "What company purchased the Cubs in 1981?" OPTIONS:
- yes
- no

A:
no