question: OPTIONS:
- yes
- no
DDT use is not always effective, as resistance to DDT was identified in Africa as early as 1955, and by 1972 nineteen species of mosquito worldwide were resistant to DDT.
Is DDT 100% guaranteed to work?

answer: yes

[Q]: Sentence: For works where an author's manuscript survived a case Greg had not considered Question: What is the main criticism of Greg's work? OPTIONS:
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- no
++++++++++
[A]: yes

Q: Does "According to papyrologist Knut Kleve, "The theory, then, that the lower-case letters have been developed from the fifth century uncials and the ninth century Carolingian minuscules seems to be wrong."" provide a valid answer to "Which type of document was general unicameral because the writer used one type of writing but not another?"?
OPTIONS:
- yes
- no
A: no

Problem: Does "Uranium was also used in photographic chemicals (especially uranium nitrate as a toner), in lamp filaments for stage lighting bulbs, to improve the appearance of dentures, and in the leather and wood industries for stains and dyes." answer the question "Along with leather, what industry uses uranium in dyes and stains?" OPTIONS:
- yes
- no

A: yes

Does the sentence "The translation is known as the "Septuagint", a name that refers to the seventy translators (seventy-two, in some versions) who were commissioned to translate the Bible at Alexandria, Egypt." provide a valid answer to the question "How did each translator of the Bible work in Alexandria?" OPTIONS:
- yes
- no

A: no

Does the sentence "In 1986, Michael Dell brought in Lee Walker, a 51-year-old venture capitalist, as president and chief operating officer, to serve as Michael's mentor and implement Michael's ideas for growing the company." provide a valid answer to the question "What year did Michael Dell bring in Lee Walker to the company?" OPTIONS:
- yes
- no

A:
yes