2466, discusses the four collections, which include certification of a minimum number of installed and operating microwave links and the maintenance of a computer-readable database.
( 2466 ( , ( ( discusses ( ( ( the ( four collections ) ) , ) ( which ( include ( certification ( of ( ( ( ( a ( minimum number ) ) ( of ( installed ( and ( operating ( microwave links ) ) ) ) ) ) and ) ( ( the maintenance ) ( of ( a ( computer-readable database ) ) ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (SINV (FRAG (NP (CD 2466))) (, ,) (VP (VBZ discusses)) (NP (NP (DT the) (CD four) (NNS collections)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBP include) (NP (NP (NN certification)) (PP (IN of) (NP (NP (NP (DT a) (JJ minimum) (NN number)) (PP (IN of) (NP (JJ installed) (CC and) (NN operating) (NN microwave) (NNS links)))) (CC and) (NP (NP (DT the) (NN maintenance)) (PP (IN of) (NP (DT a) (JJ computer-readable) (NN database))))))))))) (. .)))
2466 discusses 3 collections.
( ( ( 2466 discusses ) ( 3 collections ) ) . )
(ROOT (NP (NP (CD 2466) (NNS discusses)) (NP (CD 3) (NNS collections)) (. .)))