Problem: Does "In 2009, the Foundation decided to refocus its WASH effort mainly on sustainable sanitation services for the poor, using non-piped sanitation services (i.e. without the use of sewers), and less on water supply." answer the question "WHy did the foundation make the switch"

A: no

Problem: Does "In principle, the Planck constant could be determined by examining the spectrum of a black-body radiator or the kinetic energy of photoelectrons, and this is how its value was first calculated in the early twentieth century." answer the question "How was the Planck constant calculated in the early 20th century?"

A: yes

Problem: Does "Bucopho bring to the inkhundla all matters of interest and concern to their various chiefdoms, and take back to the chiefdoms the decisions of the inkhundla." answer the question "How many representatives does each tinkhundla elect to the Swazi House of Assembly?"

A:
no