What are the parts of speech in sentence The campers were drenched by rainstorm?

Here's a breakdown of the parts of speech in the sentence "The campers were drenched by a rainstorm":

* The: Definite article (determiner)

* campers: Noun (plural)

* were: Verb (past tense of "to be")

* drenched: Verb (past participle, used as an adjective here)

* by: Preposition

* a: Indefinite article (determiner)

* rainstorm: Noun