What if a donor contributes money to a church's building fund and the church later abandons its plans to construct a new facility?

For example, a donor contributes $100 to her church, but in return receives a dinner worth $30.

For example, a donor contributes a check in the amount of $1,000 and specifies that it be used for missions, or the building fund, or some other specific project.

In energy transfer, only one donor contributes to the production of holes.