What request does the following SQL answer? (Note that a request should be an English language question or description like the ones in part a), not an account of how the data is processed to produce the result.)

SELECT page.page_code, developer

FROM page JOIN viewing_action ON (page.page_code = viewing_action.page_code)

WHERE dwell_time < 1800000

GROUP BY page.page_code, developer

HAVING (AVG(dwell_time) < 3000);