Does the sentence "In 1654, Otto von Guericke invented the first vacuum pump and conducted his famous Magdeburg hemispheres experiment, showing that teams of horses could not separate two hemispheres from which the air had been partially evacuated." provide a valid answer to the question "What was the vacuum created by the mercury displacement pump?"

A: no

Does the sentence "These ratios have been subjectively determined based on a resolution of 70 pixels per cm (178 DPI) when viewed at 25 cm (9.8 inch) distance." provide a valid answer to the question "How are the two ratios found?"

A: yes

Does the sentence "Hopkins' column also drew criticism on Twitter, including from Russell Brand, to whom Hopkins responded by accusing Brand's "champagne socialist humanity" of neglecting taxpayers." provide a valid answer to the question "With whom did Usborne draw parallels to Hopkins as a result of Hopkins' comments?"

A: no

Does the sentence "It is the most widely used vaccine worldwide, with more than 90% of all children being vaccinated." provide a valid answer to the question "What percentage of kids in the whole world get the BCG vaccine?"

A:
yes