question:
Chopin's polonaises show a marked advance on those of his Polish predecessors in the form (who included his teachers Zywny and Elsner).
Chopin's polonaises needed what kind of playing technique?

answer: no

question:
Under the supervision of May and Taylor, numerous restoration projects have been under way involving Queen's lengthy audio and video catalogue.
Which band members were involved in the restoration of Queen's prior projects?

answer: yes

question:
In 1981, after 6 decades under the Wrigley family, the Cubs were purchased by Tribune Company for $20,500,000.
How much did Tribune Company purchase the Cubs for?

answer: yes

question:
Some technologies enabled the exploration of new worlds such as the pressurized balloon of Auguste Piccard and the Bathyscaphe which permitted Jacques Piccard to reach the deepest point of the world's oceans.
Who invented the pressurized balloon?

answer:
yes