1. Some people have interpreted the discussions we are having today as a precursor to regulation.

2. Jordan had some active moments early, usually a precursor to a big game for him.

3. The most obvious precursor to Google Glass is the smartphone.

4. In one test, mice were trained to recognise a sound that was a precursor to a mild electric shock.

5. The killing was seen as a precursor of the violent power struggles within the Shiite community that would unfold in subsequent years.