( ( So ( with ( ( a ( discovery rate ) ) ( of ( ( one ( strong lens ) ) ( per ( hundred ( parallel fields ) ) ) ) ) ) ) ) ( , ( ( ( the ( 1000-2000 ( single-orbit ( F814W ( parallel fields ) ) ) ) ) ( per year ) ) ( ( will ( yield ( ( ( a ( few dozen ) ) ( new ( strong ( gravitational lenses ) ) ) ) ( per year ) ) ) ) . ) ) ) )
(ROOT (S (ADVP (IN So) (PP (IN with) (NP (NP (DT a) (NN discovery) (NN rate)) (PP (IN of) (NP (NP (CD one) (JJ strong) (NN lens)) (PP (IN per) (NP (CD hundred) (JJ parallel) (NNS fields)))))))) (, ,) (NP (NP (DT the) (CD 1000-2000) (JJ single-orbit) (NN F814W) (NN parallel) (NNS fields)) (PP (IN per) (NP (NN year)))) (VP (MD will) (VP (VB yield) (NP (NP (QP (DT a) (JJ few) (NN dozen)) (JJ new) (JJ strong) (JJ gravitational) (NNS lenses)) (PP (IN per) (NP (NN year)))))) (. .)))
So with a discovery rate of one strong lens per hundred parallel fields, the 1000-2000 single-orbit F814W parallel fields per year will yield a few dozen new strong gravitational lenses per year.
(ROOT (S (NP (JJ Strong) (JJ gravitational) (NNS fields)) (VP (VBP are) (ADJP (JJ capable) (PP (IN of) (S (VP (VBG altering) (NP (NP (DT the) (NN rate)) (PP (IN of) (NP (NN time) (NN passing))))))))) (. .)))