Similar phenomena had been reported in the same area about ten years previous.

A similar phenomenon can be observed in the sports world.

A similar phenomenon is seen in other parts of the animal kingdom.

As usual, it seems that similar phenomena can be produced in different ways.

Catholic school officials in other cities are noticing a similar phenomenon.

A similar phenomenon was witnessed this evening along the entire border between the two countries.

We seem to have a similar phenomenon again here.

On the following night, similar phenomena had taken place.

The Kosovo crisis led to a similar but less widespread phenomenon.