question: OPTIONS:
- yes
- no
More recently, scientists have started to focus on measuring changes in brain activity related to sexual arousal, by using brain-scanning techniques.
What have scientists started spending the most time on?

answer: yes

[Q]: Sentence: Brilliance such as this compensated for dullness in many early magnetic pickups having drooping midrange and treble response. Question: How were Wente-Style condenser microphones helpful? OPTIONS:
- yes
- no
++++++++++
[A]: no

Q: Does "The UO2+_2 ion represents the uranium(VI) state and is known to form compounds such as uranyl carbonate, uranyl chloride and uranyl sulfate." provide a valid answer to "What state is represented by the UO2+ 2 ion?"?
OPTIONS:
- yes
- no
A: yes

Problem: Does "The second-highest major peaks are Monte Rosa at 4,634 m (15,200 ft) and Ortler at 3,905 m (12,810 ft), respectively" answer the question "The highest peak of the Eastern Alps is where?" OPTIONS:
- yes
- no

A: no

Does the sentence "Bohr solved this paradox with explicit reference to Planck's work: an electron in a Bohr atom could only have certain defined energies En" provide a valid answer to the question "Who introduced the first quantized model of the atom?" OPTIONS:
- yes
- no

A: no

Does the sentence "The Prime Minister of the Union of South Africa, Jan Smuts, was facing an election and hoped to make political capital out of the visit." provide a valid answer to the question "What were the King's South African bodyguards referred as?" OPTIONS:
- yes
- no

A:
no