käsittelevistä

Käsittelevistä is a Finnish inflected form of the present active participle käsittelevä, which comes from the verb käsitellä meaning "to handle" or "to deal with." The present active participle functions like an adjective in Finnish and can take the same number- and case-based endings as other adjectives. The form käsittelevistä appears when the participle describes a plural noun in the elative case (ending -istä). For example, käsittelevistä ryhmistä means "from groups that handle/deal with (something)."

In usage, käsittelevistä is typically found in formal or academic contexts, especially within relative clauses or descriptive phrases that identify agents or actors performing a handling action. The construction allows speakers to specify which groups or entities are being discussed based on their activity of handling or dealing with a subject.

Examples:

- Tutkimuksessa käytettiin käsittelevistä ryhmistä kerättyä dataa. (In the study, data collected from groups that handle [the issue] was used.)

- Käsittelevistä opettajista puhuttiin tutkimuksessa. (The teachers who handle [the matter] were discussed in the study.)

Overall, käsittelevistä is a niche grammatical form used to denote ownership of the activity by a plural noun in the elative case, functioning as an attributive or part of a larger clause.