Does the sentence "The most valuable tonewoods, such as the ripple sycamore (Acer pseudoplatanus), used for the backs of violins, combine acoustic properties with decorative color and grain which enhance the appearance of the finished instrument." provide a valid answer to the question "What expensive wood with a prized color is used to make the backs of violins?"

A: yes

Does the sentence "Nigerian President Goodluck Jonathan in May 2014 claimed that Boko Haram attacks have left at least 12,000 people dead and 8,000 people crippled." provide a valid answer to the question "How many people had Boko Haram killed by May 2014?"

A: yes

Does the sentence "Parral remained an important economic and cultural center for the next 300 years." provide a valid answer to the question "How many years was Parral an important economic and cultural center?"

A: yes

Does the sentence "The area served by the Lord-Lieutenant (termed now a ceremonial county) covered the entirety of the administrative county and the county boroughs, and was expanded whenever boroughs annexed areas in neighbouring counties such as Wythenshawe in Manchester south of the River Mersey and historically in Cheshire, and southern Warrington." provide a valid answer to the question "Where is the ancient border between Lancashire and Yorkshire located?"

A:
no