Question: What does the structure whose operation was engaged by Great Wheel Corporation consist of? 

Context paragraphs:
Great Berlin Wheel: The Great Berlin Wheel was a giant Ferris wheel to be built near the Berlin Zoological Garden (Zoologischer Garten Berlin) in Berlin, Germany, by the Great Wheel Corporation.

Compressed data structure: The term compressed data structure arises in the computer science subfields of algorithms, data structures, and theoretical computer science.  It refers to a data structure whose operations are roughly as fast as those of a conventional data structure for the problem, but whose size can be substantially smaller.  The size of the compressed data structure is typically highly dependent upon the entropy of the data being represented.

Great Orlando Wheel: The Great Orlando Wheel (or Orlando Great Wheel) is one of at least five Great Wheel Corporation proposed giant Ferris wheel projects which failed between 2007 and 2010.

MISC Berhad: MISC Berhad () was incorporated in 1968 as Malaysia International Shipping Corporation Berhad and is the leading international shipping line of Malaysia.  In September 2005, Malaysia International Shipping Corporation Berhad adopted its present corporate identity and changed its name to MISC Berhad.  Its main shareholder is Petroliam Nasional Berhad (PETRONAS), the national oil conglomerate of Malaysia.  The principal business of the Corporation consist of Ship owning, Ship operating, Other shipping related activities, Owning and operating of offshore floating facilities as well as Marine repair, Marine conversion and Engineering & Construction works.  With a modern and well-diversified fleet of more than 120 vessels and a combined tonnage of more than  DWT .

Thanjavur Municipal Corporation: Government of Tamil Nadu announced for upgrade of Thanjavur Special Grade Municipality to City Municipal Corporation of Thanjavur.  Thanjavur City Municipal Corporation is a civic body that governs Thanjavur city, India.  This corporation consist of 51 wards and the legislative body is headed by an elected Chairperson assisted by a Deputy Chairperson and 49 councillors who represent each wards in the city.  This will be upgraded to Mayor and Deputy-Mayor in near future.The city of Thanjavur is to be upgraded as Smart City soon

Dindigul Municipal Corporation: The Dindigul Municipal Corporation is a civic body that governs Dindigul city, India.  This corporation consist of 50 wards and the legislative body is headed by an elected Chairperson assisted by a Deputy Chairperson and 48 councillors who represent each wards in the city.  This will be upgraded to Mayor and Deputy-Mayor in near future.  Government of Tamil Nadu announced for upgrade of Dindigul Special Grade Municipality to City Municipal Corporation of Dindigul.

Ferris wheel: A Ferris wheel (sometimes called a big wheel, observation wheel, or, in the case of the very tallest examples, giant wheel) is a nonbuilding structure consisting of a rotating upright wheel with multiple passenger-carrying components (commonly referred to as passenger cars, cabins, tubs, capsules, gondolas, or pods) attached to the rim in such a way that as the wheel turns, they are kept upright, usually by gravity.

Greater Chennai Corporation: The Chennai Municipal Corporation (officially the Greater Chennai Corporation), formerly known as the Corporation of Madras, is the civic body that governs the city of Chennai (formerly Madras), India.  Inaugurated on 29 September 1688, under a Royal Charter issued by King James II on 30 December 1687 as the Corporation of Madras, it is the oldest municipal body of the Commonwealth of Nations outside Great Britain.  It is headed by a mayor, who presides over 200 councillors each of whom represents one of the 200 wards of the city.  It is also the second oldest corporation in the world, after the city of Government of Tamil Nadu announced for upgrade of Thanjavur Special Grade Municipality to City Municipal Corporation of Thanjavur. [4] Thanjavur City Municipal Corporation is a civic body that governs Thanjavur city, India.  This corporation consist of 51 wards and the legislative body is headed by an elected Chairperson assisted by a Deputy Chairperson and 49 councillors who represent each wards in the city.  This will be upgraded to Mayor and Deputy-Mayor in near future.

Great Wheel Corporation: Great Wheel Corporation was a company engaged in the development, building, financing, and operation of Ferris wheels, which they often termed "observation wheels" or "observation platforms".

Vellore Municipal Corporation: Vellore Municipal Corporation or City Municipal Corporation of Vellore is a civic body that governs the city of Vellore, Tamil Nadu, India.  Vellore corporation consist of 60 wards and is headed by a mayor who presides over a Deputy Mayor and 60 Councillors who represent each wards in the city.

Supporting paragraphs: Great Wheel Corporation Ferris wheel
Answer: rotating upright wheel