Dependency Tree

Universal Dependencies - English - PUD

Language	English
Project	PUD
Corpus Part	test
Annotation	Uszkoreit, Hans; Macketanz, Vivien; Burchardt, Aljoscha; Harris, Kim; Marheinecke, Katrin; Petrov, Slav; Kayadelen, Tolga; Attia, Mohammed; Elkahky, Ali; Yu, Zhuoran; Pitler, Emily; Lertpradit, Saran; Kirchner, Jesse; Lambertino, Lorenzo; Popel, Martin; Zeman, Daniel; Manning, Christopher; Schuster, Sebastian; Reddy, Siva

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s-1	~~It was completed rather late in the war; although a number of B-29s were equipped with Eagle and it worked well, it came too late to make much difference.~~
s-2	~~The radar system for which Alvarez is best known and which has played a major role in aviation, most particularly in the post war Berlin airlift, was Ground Controlled Approach (GCA).~~
s-3	Using Alvarez's dipole antenna to achieve a very high angular resolution, GCA allows ground-based radar operators watching special precision displays to guide a landing airplane to the runway by transmitting verbal commands to the pilot.
s-4	~~The system was simple, direct, and worked well, even with previously untrained pilots.~~
s-5	~~It was so successful that the military continued to use it for many years after the war, and it was still in use in some countries in the 1980s.~~