List all actors in a movie by Xquery

I want to list all actors for each movie I got in my eXist-db/XML-database. I've created a movies.xml and an actors.xml. (Content is pasted at the end.)

My Xquery so far is as below, and the result is listing an actor and a movie together, with the correct "join", but I want to list a movie, and then all the actors in it. I've written how I want it, but I'm not sure if it's even a good output. It just seems like the most natural as I'm used to MySQL.

for $movie in doc('db/movies/movies.xml')//movie, 
$actor in doc('db/movies/actors.xml')//actor

where $actor/@id = $movie/actors/actor
return <movact>
    {$actor//name}
    {$movie//title}
    </movact>

My result so far

<movact>
    <name>Dan</name>
    <title>Harry Putter</title>
</movact>
<movact>
    <name>Dan</name>
    <title>Star Cars</title>
</movact>
<movact>
    <name>John</name>
    <title>Star Cars</title>
</movact>
<movact>
    <name>Mary</name>
    <title>Star Cars</title>
</movact>

How I want it

<movact>
    <title>Harry Putter</title>
    <name>Dan</name>
</movact>
<movact>
    <title>Star Cars</title>
    <!-- Should the <name>s be surrounded by an <actor>-tag? -->
    <name>Dan</name>
    <name>John</name>
    <name>Mary</name>
</movact>

XML-content

Beware of bad structure.

/* movies.xml */
<?xml version="1.0"?>
<movies>
    <movie id="1">
        <title>Harry Putter</title>
        <year>2005</year>
        <actors>
            <actor>1</actor>
        </actors>
    </movie>
    <movie id="2">
        <title>Star Cars</title>
        <year>1998</year>
        <actors>
            <actor>1</actor>
            <actor>2</actor>
            <actor>3</actor>
        </actors>
    </movie>
</movies>

/* actors.xml */
<?xml version="1.0"?>
<actors>
    <actor id="1">
        <name>Dan</name>
        <gender>Male</gender>
    </actor>
    <actor id="2">
        <name>John</name>
        <gender>Male</gender>
    </actor>
    <actor id="3">
        <name>Mary</name>
        <gender>Female</gender>
    </actor>
</actors>