Detailed Instructions: Given a text, write a compressed version of it in a single sentence.
Problem:These national inventories were prepared for all 50 States at the county level for mobile highway and non-road sources. They were prepared for the 48 contiguous states at the countylevel for electric generating unit (EGU), non-EGU point, and stationary area sources.
Solution:
Mobile highway and non-road sources. They were prepared for the 48 contiguous states at the countylevel for electric generating unit (EGU), non-EGU point, and stationary area sources.