1.   Companies want proof that diversity training makes them more profitable and productive, but no hard data exists.

2.   It follows, therefore, that no map-related spatial data exist which are wholly error-free.

3.   No data exist for outcome of the untreated chronic condition followed for more than five years.

4.   Data exists but it needs pulling together.

5.   The Royal College of Obstetricians and Gynaecologists say too little data exists on the dangers of underwater birth.

6.   Although no precise data exist, electronic trading in overseas markets probably has grown at parallel rates.

7.   After that, the data still exists on the drive, but because it has been permanently overwritten, it is inaccessible and, therefore, considered gone.

8.   But he said that definitive data do not exist.

9.   But no data exist on whether teen smoking in the state has declined since the campaign was begun.

10.   But safety researchers say no reliable data exist that show cell phone usage by motorists to be any more distracting than tuning car radios or drinking coffee.