question: OPTIONS:
- yes
- no
To prevent the risk of out-of-phase supplies mixing, sections of line fed from different feeder stations must be kept strictly isolated.
What was the main requirement for electric feeder stations?

answer: yes

[Q]: Sentence: In retaliation, U.S. President Bill Clinton launched Operation Infinite Reach, a bombing campaign in Sudan and Afghanistan against targets the U.S. asserted were associated with WIFJAJC, although others have questioned whether a pharmaceutical plant in Sudan was used as a chemical warfare plant. Question: How much of Sudan's medicines were produced by a pharmaceutical plant Clinton's operation bombed? OPTIONS:
- yes
- no
++++++++++
[A]: no

Q: Does "Others focused on the personalities in the show; Ramin Setoodeh of Newsweek accused judge Simon Cowell's cruel critiques in the show of helping to establish in the wider world a culture of meanness, that "Simon Cowell has dragged the rest of us in the mud with him."" provide a valid answer to "Sheryl Crow felt the show undermined art and promoted what?"?
OPTIONS:
- yes
- no
A: no

Problem: Does "Madonna returned to pure dance songs with Confessions on a Dance Floor, infusing club beats and retro music with the lyrics about paradoxical metaphors and reference to her earlier works." answer the question "What type of music did Madonna experimented with in Music?" OPTIONS:
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A: no

Does the sentence "A "species" under the act can be a true taxonomic species, a subspecies, or in the case of vertebrates, a "distinct population segment." provide a valid answer to the question "How many different ways can a species be added to the endangered list?" OPTIONS:
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- no

A: no

Does the sentence "Machiavelli in particular was scornful of writers on politics who judged everything in comparison to mental ideals and demanded that people should study the "effectual truth" instead." provide a valid answer to the question "What did da Vinci advise when your experience contradicted authority?" OPTIONS:
- yes
- no

A:
no