1 | Careful study of the market is a prerequisite for success. | |
2 | A command of information is the necessary prerequisite to the scientific consideration of any subject. | |
3 | After taking office in January, Barack Obama offered talks without precondition to Iran. | |
4 | To save yourself both of these, the only prerequisite is a sense of adventure. | |
5 | The political preconditions are not in place for a coordinated approach to economic and financial challenges. |