SPARQL search
You can use the SPARQL search to find datasets and their metadata by using SPARQL query language. Datasets on Suomi.fi Open Data are published as RDF triples and they follow the DCAT-AP specification. You can find information on Suomi.fi Open Data’s DCAT AP extension here.
Read more about SPARQL queries.
Data.europa.eu provides examples on how to use SPARQL queries which can also be used on avoindata.fi.