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.

Input: Consider Input: There are an estimated 27 @,@ 000 civil aircraft registered in the UK , 96 per cent of which are engaged in GA activities . In 2005 the GA fleet comprised 9 @,@ 000 fixed @-@ wing aircraft , 4 @,@ 100 microlights , 1 @,@ 300 helicopters , 1 @,@ 800 airships / balloons , 2 @,@ 500 gliders and some 7 @,@ 000 hang gliders . Estimates put the number of foreign @-@ registered GA aircraft based in the UK at 900 . The number of pilots licensed by the CAA to fly powered aircraft in 2005 was 47 @,@ 000 , of whom 28 @,@ 000 held a Private Pilot Licence . The remainder held professional pilot licences , either a Commercial Pilot Licence or an Airline Transport Pilot Licence , although not all of these would be engaged in GA activities . In addition , there are 10 @,@ 000 active glider pilots , and estimates put the membership of aviation @-@ related sport and recreational associations at 36 @,@ 000 . The number of aerodromes that support GA in the UK is difficult to establish with certainty . Pooleys 2008 United Kingdom Flight Guide lists 355 , and the Airplan Flight Equipment UK VFR Flight Guide 2008 lists nearly 500 . Lockyears Farm ' Strips ' and Private Airfields Flight Guide lists more than 300 landing sites . The GASAR study estimates 1 @,@ 100 formal flying sites in England alone , a figure which includes 400 sites known to planning authorities but not included in flight guides . It estimates another 759 informal sites known only to land owners , customs , and members of the enthusiast group Air @-@ Britain .The sector was estimated to employ nearly 12 @,@ 000 people and directly contribute 1 @.@ 4 billion to the UK economy in 2005 , making it roughly seven per cent of the size of the CAT industry . Nearly half of the economic contribution was generated by business aviation . fill in the blank :There are an estimated 27 @,@ 000 civil __________________ registered in the UK , 96 per cent of which are engaged in GA activities .

Output: aircraft

Input: Consider Input: The main conservation threat to the plain maskray is incidental capture by commercial bottom trawl fisheries . In the present day , this is mostly caused by Australia 's Northern Prawn Fishery , which operates throughout its range . Although this species is discarded when caught , it is more delicate @-@ bodied than other maskrays and is thus unlikely to survive encounters with trawling gear . Historically , this species may also have been negatively affected by Japanese , Chinese , and Taiwanese trawlers that fished intensively off northern Australia from 1959 to 1990 . These factors , coupled with the plain maskray 's limited distribution and low reproductive rate , have resulted in its being assessed as Near Threatened by the International Union for Conservation of Nature ( IUCN ) . fill in the blank : The main conservation threat to the plain maskray is incidental __________________ by commercial bottom trawl fisheries .

Output: capture

Input: Consider Input: Private flying can be for both recreational purposes and personal transport , using aircraft that are owned individually , collectively as part of a syndicate , or rented from a flying club . A survey of pilots conducted between 2001 and 2002 indicated that the most common purposes of recreational flights were local flights near the base aerodrome , visits to other aerodromes , and day trips away . Half of all flights landed at the same aerodrome they departed from , and only 9 per cent involved an overnight stay away from home .Private flying is most associated with the traditional form of factory @-@ produced two and four @-@ seater , single piston @-@ engine training and touring aircraft . Examples of these are the Cessna 152 , Cessna 172 , and Piper PA28 Cherokee , all with their origins in the 1950s , and the more modern designs of Cirrus . The average cost per hour to fly such aircraft has been estimated to be 133 , compared to an estimated 77 per hour for gliders , and a reported 35 per hour for microlights . Recent trends have seen an increase in the use of microlights , and also in recreational helicopter flying following the introduction of smaller and cheaper machines such as the Robinson R22 and R44 . Another growth area in private flying in recent years has been in the use of amateur built aircraft , such as the Van 's Aircraft RV @-@ 4 and the Europa .There is a strong vintage aircraft movement in the UK , with two @-@ thirds of the 500 registered historic aircraft active . These cover the whole spectrum of civil and military aviation , examples being the de Havilland Dragon Rapide airliner of the 1930s , and the World War II ( WWII ) Spitfire fighter . There are many post @-@ WWII aircraft which could also be considered historic under a looser definition , including for example 60 ex @-@ military jets such as the Hawker Hunter . Historic aircraft are regular exhibits at air displays , which are claimed to be the second most popular spectator activity after football in the UK.fill in the blank : Private flying can be for both recreational __________________ and personal transport , using aircraft that are owned individually , collectively as part of a syndicate , or rented from a flying club .
Output: purposes