Problem: Does "Most of Guinea-Bissau's Muslims are of the Sunni denomination with approximately 2% belonging to the Ahmadiyya sect." answer the question "What sect does 2% of the population belong to?"

A: yes

Problem: Does "Their luminous efficacies compared to normal LEDs depend on the spectral distribution of the resultant light output and the original wavelength of the LED itself." answer the question "What do phosphor-based LEDs luminous efficacies depend on?"

A: yes

Problem: Does "To date, the term "rule of law" has been used primarily in the English-speaking countries, and it is not yet fully clarified even with regard to such well-established democracies as, for instance, Sweden, Denmark, France, Germany, or Japan." answer the question "What other countries have successful democracies?"

A:
yes