1.   Dark based his conclusions on a reading of the Babel story as a prophetic work.

2.   Our conclusions are based on scientific research.

3.   Their conclusion is based on a comprehensive review of all the previous studies.

4.   This conclusion is based on studies of human society, both modern and tribal, and on comparisons with apes and birds.

5.   To base conclusions on such a small sample is unsatisfactory.

6.   He based his conclusions on the evidence given by the captured prisoners.

7.   This conclusion was based on sophisticated but completely separate experiments.

8.   This conclusion is based on the experimental results obtained with hexamethonium and lidocaine.

9.   But, as Neal has noted, these are very simple patterns on which it is difficult to base any conclusions regarding authorship.