question: OPTIONS:
- yes
- no
The halogen cycle increases the lifetime of the bulb and prevents its darkening by redepositing tungsten from the inside of the bulb back onto the filament.
How does the halogen bulb decrease darkening over time?

answer: yes

[Q]: Sentence: Bern lies on the Swiss plateau in the Canton of Bern, slightly west of the centre of Switzerland and 20 km (12 mi) north of the Bernese Alps. Question: What is the tallest mountain closests to Bern? OPTIONS:
- yes
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++++++++++
[A]: no

Q: Does "A select committee was set up to examine the issue, but Pearce's bill did not become law, and several other bills failed in the following years." provide a valid answer to "Who was the member of Parliament who brought a bill about Daylight Saving Time to the House of Commons in 1908?"?
OPTIONS:
- yes
- no
A: no

Problem: Does "In his usurpation of the throne from the Jianwen Emperor (r. 13981402), the Yongle Emperor was aided by the Buddhist monk Yao Guangxiao, and like his father, the Hongwu Emperor, the Yongle Emperor was "well-disposed towards Buddhism", claims Rossabi." answer the question "When did the Yongle Emperor invite Deshin Shekpa to his court?" OPTIONS:
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A: no

Does the sentence "Both the council members and the mayor serve four-year terms; none face term limits." provide a valid answer to the question "Which wards elect city council members in the alternate year from the mayor?" OPTIONS:
- yes
- no

A: no

Does the sentence "Like Achille Ratti before him,[a] he felt confronted with the huge problem, not limited to Poland, of excessive nationalism: "This form of nationalism treats foreigners as enemies, especially foreigners with whom one has common frontiers." provide a valid answer to the question "What humanitarian concept did Montini see nationalism as violating?" OPTIONS:
- yes
- no

A:
yes