1.   Assisted living was virtually unknown until a couple of decades ago.

2.   But embryos of giant dinosaurs with intact skulls were unknown until now.

3.   That is a part of the Bush personality that was unknown until this speech.

4.   The how will remain unknown until after the opening ceremonies Down Under.

5.   The towns may have been relatively unknown until now but the pinot noir grape has been planted in their vineyards for hundreds of years.

6.   The whereabouts of the remains of the original crew of five had been unknown until last year.

7.   The trust fund was clearly losing money but the size of the deficit was unknown until Monday.

8.   To the rest of America, the players were virtually unknown until two weeks ago.

9.   Whether this is a psychological ploy by Grant or the beginning of a psychological meltdown will remain unknown until the opening bell.

10.   Whether or not it gains universal acceptance throughout Major League Baseball is an issue that will most likely remain unknown until after the season begins.