Examples:
Better sewage systems aid in the fight against cholera.
Huge projects designed to aid poorer countries can sometimes do more harm than good.
His excuse for drinking brandy is that it's said to aid digestion.
I believe this fellowship will aid me in all of my academic research pursuits.
The services provided aided the patient in reducing his chronic pain syndrome.
Mappings:
VerbNet: help-72.1-1-1
FrameNet: Assistance
PropBank: aid.01
WordNet 3.0 Sense Numbers: 1, 2