Use "sink into oblivion" in a sentence

1. Wind power presents too many advantages to be allowed to sink into oblivion.

2. It seems that the so-called new theory is likely to sink into oblivion.

3. These toys will be around for a year or two, then fade/slide/sink into oblivion.

4. The Warsaw Declaration vows that the suffering of victims of totalitarian regimes "will not sink into oblivion."

5. 5 Anton Flettner's way of extracting power from the wind presents too many advantages to sink into oblivion.