( So ( faintly ( ( did ( it ( ( come ( , ( or from ) ) ) ( ( so ( ( far away ) ( , ( that ( ( ( had ( the pipes ) ) not ) ( been ( so quiet ) ) ) ) ) ) ) ( he ( ( might never ) ( have ( ( heard it ) ( at all ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (IN So) (NP (NN faintly)) (VP (VBD did) (S (NP (PRP it)) (VP (VB come) (PRN (, ,) (CC or) (PP (IN from))) (SBAR (IN so) (PRN (ADVP (RB far) (RB away)) (, ,) (SBAR (IN that) (SINV (VBD had) (NP (DT the) (NNS pipes)) (RB not) (VP (VBN been) (ADJP (RB so) (JJ quiet)))))) (S (NP (PRP he)) (VP (MD might) (ADVP (RB never)) (VP (VB have) (VP (VBN heard) (NP (PRP it)) (ADVP (IN at) (DT all)))))))))) (. .)))
So faintly did it come, or from so far away, that had the pipes not been so quiet he might never have heard it at all.
(ROOT (S (NP (NNS Uranus)) (VP (VBZ is) (ADJP (RB so) (JJ faint)) (SBAR (IN because) (S (NP (PRP it)) (VP (VBZ is) (ADVP (RB far) (RB away)))))) (. .)))