isAboutSubject - Lithografie (among other techniques) has double typing

[jorisbr]

The currently implemented properties can be found here.

Describe the bug and/or desired behavior

We should support techniques in the query libraryIsAboutTechnique but it does appear that we get double typing.

Relevant bit of the query:

                IF(EXISTS {
                        ?reconciledNode rdf:type crm:E55_Type.
                        ?_ crm:P32_used_general_technique ?reconciledNode
                    }, q42:Technique, 1/0),

Relevant examples

Rijksstudio links:

Collectie Online links:

1. https://www.rijksmuseum.nl/nl/collectie/zoeken?collectionSearchContext=Library&page=1&sortingType=Popularity&facets%5B0%5D.id=c0ff761df53abc386723ac4b9c4789cc&facets%5B0%5D.nodeRelationType=UsedTechnique

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Screenshots

[jorisbr]

Related to #110