A subject - verb - direct object - prepositional object sentence consists of a subject, a complex transitive verb, or a complex transitive prepositional verb, a direct object and a prepositional object.
The subject in the sentence above is a one-word noun phrase. The object is also a noun phrase and the prepositional object is prepositional phrase. Without more context we cannot know what "them" refers to.
Here are a few more examples (click and drag to stop, start and find the sentence you wish to examine):
You can view an analysis of some of the noun phrases in the above examples in the animations below (click on Subject to view each noun phrase).
In the above example the prepositional phrase is longer. It contains an embedded prepositional phrase "from Europe". Long prepositional phrases are not uncommon in academic writing.
Prepositional phrases contain a preposition and a complement (usually a noun phrase) In the above example the prepositional phrase contains a preposition and a nominal relative clause.
Sometimes it is is possible to use alternative prepositional constructions. The above construction may be rephrased as below:
You can see further examples of this structure on the SVOd Op page and test yourself on the SVOd Op exercise page.