Examples:
Let's investigate the syntax of Chinese.
Police are investigating allegations of corruption involving senior executives.
We are of course investigating how an error like this could have occurred.
We heard noises downstairs, so Fred went down to investigate.
Mappings:
VerbNet: investigate-35.4
FrameNet: Research,Criminal_investigation,Scrutiny
PropBank: investigate.01
WordNet 3.0 Sense Numbers: 1, 2