question: OPTIONS:
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Other improvements to ships included the use of lateen sails and the stern-post rudder, both of which increased the speed at which ships could be sailed.
What type of rudder was introduced during this period?

answer: yes

[Q]: Sentence: The largest municipal park in the city is Pelham Bay Park with 2,700 acres (1,093 ha). Question: New York has approximately how many acres of parks? OPTIONS:
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++++++++++
[A]: no

Q: Does "The restriction will be in force between 8 a.m. and 8 p.m., and traffic will not be restricted on Sundays." provide a valid answer to "On what day of the week will travel remain unrestricted by New Delhi's alternate day driving scheme?"?
OPTIONS:
- yes
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A: yes

Problem: Does "These structures (and their later counterparts such as causewayed enclosures, burial mounds, and henge) required considerable time and labour to construct, which suggests that some influential individuals were able to organise and direct human labour though non-hierarchical and voluntary work remain possibilities." answer the question "What was the cultural aspect was the major center of life?" OPTIONS:
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- no

A: no

Does the sentence "Wolfgang Amadeus Mozart placed it in his 1787 work Don Giovanni and Beethoven created four variations of it." provide a valid answer to the question "What two artists created four variations of the Concerto in C Major Op 3 6?" OPTIONS:
- yes
- no

A: yes

Does the sentence "John's efforts to appear moderate and conciliatory had been largely successful, but once the rebels held London they attracted a fresh wave of defectors from John's royalist faction." provide a valid answer to the question "Who was the rebel baron leader?" OPTIONS:
- yes
- no

A:
no