Problem: Does "Apart from having an identical catenary voltage, the power distribution systems of Amtrak and SEPTA are very different." answer the question "What voltage does SEPTA system use?"

A: no

Problem: Does "At low frequencies (such as AM broadcast), arrays of vertical towers are used to achieve directionality and they will occupy large areas of land." answer the question "If one wished to take an antenna to different locations, which type would be best?"

A: no

Problem: Does "Bermuda had one of the world's highest GDP per capita for most of the 20th century and several years beyond." answer the question "What occurance is the greatest factor affecting Bermuda's economy?"

A:
no