SELECT DISTINCT COUNT(?uri) WHERE { ?x <http://dbpedia.org/property/fields> <http://dbpedia.org/resource/Sanskrit> . ?x <http://dbpedia.org/property/fields> ?uri }
Count the number of  fields of the scientists whose one of the fields is Sanskrit?
SELECT DISTINCT COUNT ( ?d ) WHERE { ?y property:fields ?d . ?y property:fields resource:Sanskrit }
8
There are [8] fields in total of the scientists whose one of the fields is Sanskrit.
A total of [8] fields of science, one of which is Sanskrit.