query row based on some row exists in a related table

[pokhiii]

Consider the following 3 tables:

1. book_components

   id	title
   1	chapter 1
   2	chapter 2

2. file_versions

   id	book_component_id	file_id
   1	1	1
   2	1	2
   3	2	3

3. files

   id	title	category
   1	med.xml	converted
   2	req.xml	source
   3	doc.xml	source

Now I want to fetch all the book components for which at least on file exists with category converted exists. So, for minimal example shown above, the query should return the row from book_components where id = 1. Because for that there exists a file converted file in the files table (id = 1).

Is there a way to do this via Objection?