Assertion: web crawler | /r/HasProperty | crawl
Facets:
value: through internet pages
type: LOCATION
Source sentences:
text: A web crawler is a relatively simple automated program, or script, that methodically scans or "crawls" through Internet pages to create an index of the data it's looking for; these programs are usually made to be used only once, but they can be programmed for long-term usage as well.