In this task, you will be given a passage to read. A fill in the blank question will be given to you.  Your answer should fit the blank appropriately.

[Q]:  General aviation in the United Kingdom General aviation in the United Kingdom has been defined as a civil aircraft operation other than a commercial air transport flight operating to a schedule or military aviation . Although the International Civil Aviation Organization ( ICAO ) excludes any form of remunerated aviation from its definition , some commercial operations are often included within the scope of general aviation ( GA ) in the UK . The sector operates business jets , rotorcraft , piston and jet @-@ engined fixed @-@ wing aircraft , gliders of all descriptions , and lighter than air craft . Public transport operations include business ( or corporate ) aviation and air taxi services , and account for nearly half of the economic contribution made by the sector . Other commercial GA activities are aerial work , such as surveying and air ambulances , and flight training , which plays an important role in the supply of pilots to the commercial air transport ( CAT ) industry . Private flying is conducted for personal transport and recreation . It includes a strong vintage aircraft movement , and encompasses a range of air sports , such as racing , aerobatics , and parachuting , at which British teams and individuals have succeeded in international competition . Of the 21 @,@ 000 civil aircraft registered in the UK , 96 per cent are engaged in GA operations , and annually the GA fleet accounts for between 1 @.@ 25 and 1 @.@ 35 million hours flown . The single most common class of aircraft is the fixed @-@ wing light aircraft associated with traditional GA , but the main area of growth over the last 20 years has been in the use of more affordable aircraft , such as microlights , amateur built aeroplanes , and smaller helicopters . There are 28 @,@ 000 Private Pilot Licence holders , and 10 @,@ 000 certified glider pilots . Some of the 19 @,@ 000 pilots who hold professional licences are also engaged in GA activities . Although GA operates from more than 1 @,@ 800 aerodromes and landing sites , ranging in size from large regional airports to farm strips , over 80 per cent of GA activity is conducted at 134 of the larger aerodromes . The GA industry , which is around 7 per cent the size of its CAT cousin , employs 12 @,@ 000 people , and contributes £ 1 @.@ 4 billion to the UK economy .GA is regulated by the Civil Aviation Authority ( CAA ) , although regulatory powers are being increasingly transferred to the European Aviation Safety Agency ( EASA ) . The main focus is on standards of airworthiness and pilot licensing , and the objective is to promote high standards of safety . At the lighter end of the GA spectrum some regulatory authority is devolved to representative bodies , and gliding is in transition from a self @-@ regulatory model to more formal governance by EASA . Airspace regulation necessary to protect an increasing number of CAT operations has reduced the area in which GA flights can be freely conducted . The growth in CAT is also making access to larger airports more difficult for the GA sector , and smaller aerodromes are vulnerable to closure and re @-@ development for more profitable uses . The UK planning system has no remit to consider the national significance of GA public transport operations , and generally does not favour the development of smaller aerodromes catering to the GA market . The planning process has become a mechanism for addressing local aerodrome @-@ related environmental issues which , particularly regarding noise , are the main subjects of public criticism levelled at GA .fill in the blank General aviation in the __________________ Kingdom. 
[A]:  United 


[Q]:  The first stage of building of the tower , as recorded by Leo XIII in his motu proprio Ut mysticam of 1891 , is credited to Pope Gregory XIII , Pope from 1572 to 1585 . The directive was to build a tower at a suitable location in the Vatican and equip it with the . The design was effected after a series of meetings of the experts who had been appointed to reform the Julian calendar , in use since 45 BC , to verify their proposed reforms . Fr . Christoph Clavius , a Jesuit mathematician from the Roman College , was the expert on the committee who suggested the new system for the observations . The 73 metres ( 240 ft ) tower was then built above the museum and library , flanked by the Belvedere and della Pigna courtyards . The instrumentation for the observation of the sun rays falling over it consisted of a meridian line designed by Ignazio Danti of Perugia . It was in the form of a circular marble plate in the centre , embellished with scientific designs . The tower still remains today , but has undergone improvements over the centuries . fill in the blank  : The first stage of building of the tower , as recorded by Leo XIII in his motu __________________ Ut mysticam of 1891 , is credited to Pope Gregory XIII , Pope from 1572 to 1585 . 
[A]:  proprio 


[Q]: The factors used in determining how an individual aerodrome is categorised by the GASAR study are based broadly on size and facilities . The six types of aerodrome are described , in size order , as : regional airports ( e.g. East Midlands ) ; major GA airports ( e.g. Oxford ) ; developed GA airfields ( e.g. Andrewsfield ) ; basic GA airfields ( e.g. Rufforth ) ; developed airstrips ( e.g. Tilstock ) ; and basic airstrips ( e.g. Chilbolton in Hampshire ) . The actual criteria used to categorise aerodromes were complex , using 28 different parameters , backed up with a peer review by experienced GA pilots .Airports generally have long , fully lit , hard @-@ surfaced runways , full air traffic control , and navigation and landing aids . They are usually located on urban fringes , support commercial and business operations , and often exclude certain types of light aircraft . At the more rurally located airfields , the lighter end of aviation , such as microlight and gliding activities , becomes increasingly prevalent , and there are few or no commercial operations other than flying schools . At this level runways are generally shorter , and grass surfaces are increasingly common . Navigation aids are increasingly scarce , being more basic where they are available , and informal ground to air radio communication replaces air traffic control . The smallest airfields are too small to feature on general purpose Ordnance Survey ( OS ) maps , and lack basic facilities such as fuel and maintenance . The majority of airstrips are basically single short grass runways with no supporting facilities , although the presence of a hangar is not uncommon at the larger examples . They do not feature on OS maps , and are owned by private clubs or , more commonly , individuals . fill in the blank  :The factors used in determining how an individual aerodrome is categorised by the GASAR study are __________________ broadly on size and facilities . 
[A]:
 based