Does the sentence "; John Kerry and Lawrence Eagleburger tied for 11th place out of the 15 confirmed Secretaries of State in that period." provide a valid answer to the question "What was Kerry's ranking in the Ivory Tower Survey for effectiveness as SoS?"

A: yes

Does the sentence "The central part of the Sahara is hyperarid, with little to no vegetation." provide a valid answer to the question "What does the Sahara have little of?"

A: no

Does the sentence "Two of the big four banks, NAB and ANZ, are headquartered in Melbourne." provide a valid answer to the question "Which two of the big four banks are headquartered in Melbourne?"

A: yes

Does the sentence "On September 6, 2006, Sony announced that PAL region PlayStation 3 launch would be delayed until March 2007, because of a shortage of materials used in the Blu-ray drive." provide a valid answer to the question "What part of the system was Sony having trouble getting supplies for?"

A:
yes