spaces always added around hyphens etc

Spaces seem to be always added around hyphens or colons.

Some examples from the "PMC_sample_1943" dataset (all text in lower case for practical reasons).

E=expected, A=actual

dhps-3-009.nxml "[twelve cases of drug-induced blepharospasm improved within 2 months of psychotropic cessation](http://europepmc.org/articles/PMC3132861)"
E: twelve cases of drug-induced blepharospasm improved within 2 months of psychotropic cessation
A: twelve cases of drug - induced blepharospasm improved within 2 months of psychotropic cessation

acp0018-0519.nxml "[gender effects in spatial orientation: cognitive profiles and mental strategies"](http://europepmc.org/articles/PMC2909401)"
E: gender effects in spatial orientation: cognitive profiles and mental strategies
A: gender effects in spatial orientation : cognitive profiles and mental strategies

10286_2010_Article_101.nxml "[poikilothermia in a 38-year-old fabry patient](http://europepmc.org/articles/PMC3093548)"
E: poikilothermia in a 38-year-old fabry patient
A: poikilothermia in a 38 - year - old fabry patient

Also around brackets (PKP/jol dataset)

articles-13382-public-13382-48827-1-PB.xml "[toxic response of heteropneustes fossilis (bloch) to some indigenous plant seed extracts](https://www.banglajol.info/index.php/CUJBS/article/view/13382/0)"
E: toxic response of heteropneustes fossilis (bloch) to some indigenous plant seed extracts
A: toxic response of heteropneustes fossilis ( bloch ) to some indigenous plant seed extracts