Sentence examples for this is a demonstration from inspiring English sources

"This is a demonstration project," he said.

Second, beside their heightened sense of moral obligation towards shareholders (i.e. this is a demonstration of owner primacy), the case mining companies tended to demonstrate greater sense of moral responsibility towards stakeholders who were geographically and/or relationally closer to their facilities than similar but distant ones.

"This is a demonstration for our freedom".

This is a demonstration of weakness.

This is a demonstration in a democratic country.

This is a demonstration, we deal with them all the time".

"This was a demonstration of muscle.

This was a demonstration of the Hyperloop's shock absorption system.

For this was a demonstration on behalf of real life and free instincts, against religion and hypocrisy.

This was a demonstration, and no astronauts were onboard.

But this was a demonstration not of supply side of the equation.