Given the stream of consciousness rationale, provide a reasonable question and answer. Rationale: Metal rods are present in construction site. Consutruction sites are present in building properties.
 The question and answer:
He was receiving workman's compensation, he had tripped over a metal rod while building where?
Options:
- factory
- construction site
- engine
- insides of skyscraper's walls
- shops
The answer is construction site