Matches are held only intermittently, however The Calcutta Cup Match, in early April, pits the Scots against their  auld  enemy the English and is a great spectacle.
( Matches ( ( ( ( ( ( are ( held ( only ( ( ( ( ( intermittently , ) however ) ( The ( Calcutta ( Cup Match ) ) ) ) , ) ( in ( early April ) ) ) ) ) ) , ) ( ( pits ( the Scots ) ) ( against ( ( their ( auld enemy ) ) ( the English ) ) ) ) ) and ) ( is ( a ( great spectacle ) ) ) ) . ) )
(ROOT (S (NP (NNS Matches)) (VP (VP (VBP are) (VP (VBN held) (PP (ADVP (RB only)) (NP (NP (NN intermittently)) (, ,) (ADVP (RB however)) (NP (DT The) (NNP Calcutta) (NNP Cup) (NNP Match)) (, ,)) (IN in) (NP (RB early) (NNP April))))) (, ,) (VP (VBZ pits) (NP (DT the) (NNPS Scots)) (PP (IN against) (NP (NP (PRP$ their) (JJ auld) (NN enemy)) (NP (DT the) (NNP English))))) (CC and) (VP (VBZ is) (NP (DT a) (JJ great) (NN spectacle)))) (. .)))
The Calcutta Cup Match pits the Scots against the English, in what is generally seen as a great spectacle.
( ( The ( Calcutta ( Cup Match ) ) ) ( ( ( ( ( pits ( the Scots ) ) ( against ( the English ) ) ) , ) ( in ( what ( ( is generally ) ( seen ( as ( a ( great spectacle ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNP Calcutta) (NNP Cup) (NNP Match)) (VP (VBZ pits) (NP (DT the) (NNPS Scots)) (PP (IN against) (NP (DT the) (NNP English))) (, ,) (PP (IN in) (SBAR (WHNP (WP what)) (S (VP (VBZ is) (ADVP (RB generally)) (VP (VBN seen) (PP (IN as) (NP (DT a) (JJ great) (NN spectacle))))))))) (. .)))