Does "They were first mentioned as early as the second century BC in Ptolemy's Geography III." contain the correct answer to "Who described the sailboats of the Estonians as pirate ships?"
OPTIONS:
- yes
- no

A: no

Does "It was the first time that a national mourning period had been declared for something other than the death of a state leader, and many have called it the biggest display of mourning since the death of Mao Zedong." contain the correct answer to "Who declared the mourning period?"
OPTIONS:
- yes
- no

A: no

Does "Some vessels like Aegis cruisers are as much a threat to aircraft as any land-based air defence system." contain the correct answer to "What type of ships are particularly well defended?"
OPTIONS:
- yes
- no

A:
no