Thus, the imbalance in the volume of mail exchanged magnifies the effect of the relatively higher rates in these countries.
( Thus ( , ( ( ( the imbalance ) ( in ( ( the volume ) ( of ( mail exchanged ) ) ) ) ) ( ( magnifies ( ( the effect ) ( of ( ( the ( ( relatively higher ) rates ) ) ( in ( these countries ) ) ) ) ) ) . ) ) ) )
(ROOT (S (ADVP (RB Thus)) (, ,) (NP (NP (DT the) (NN imbalance)) (PP (IN in) (NP (NP (DT the) (NN volume)) (PP (IN of) (NP (NP (NN mail)) (VP (VBN exchanged))))))) (VP (VBZ magnifies) (NP (NP (DT the) (NN effect)) (PP (IN of) (NP (NP (DT the) (ADJP (RB relatively) (JJR higher)) (NNS rates)) (PP (IN in) (NP (DT these) (NNS countries))))))) (. .)))
There is an imbalance in ingoing vs outgoing mail.
( There ( ( is ( ( an imbalance ) ( in ( ingoing ( vs ( outgoing mail ) ) ) ) ) ) . ) )
(ROOT (S (NP (EX There)) (VP (VBZ is) (NP (NP (DT an) (NN imbalance)) (PP (IN in) (S (VP (VBG ingoing) (NP (JJ vs) (JJ outgoing) (NN mail))))))) (. .)))