How to Use "prelude" with Example Sentences

1. That might be a prelude to bigger policy changes .
2. He thinks the public debate about sovereign-wealth funds is the prelude to action against them and that the " kindling is dry " .
3. Yet it was all simply prelude .
4. A constitutional settlement-or a prelude to more trouble ?
5. This policy was a prelude to our unwarranted and illegal invasion and occupation of iraq .