  The model is used to discern trends in marginal costs and retrofits, the approximate magnitudes of those trends, and the reasons for those trends.
The model is capable of simplifying numbers.
The model shows price inequality relationships.
We had a pop up trailer that had a tent.
the girl is nake
A person monitoring a baby as it plays with nearby luggage.
Part of me hopes that it is not right.
You should be involved directly in the other country.
A dog is chasing a ball through the house.