While this lends support to the theory that this phrase was the origin of the term "Mak'em", there is nothing to suggest that "mak'em" had come to be applied to people from Sunderland generally at such a date. The name "Mak'em" may refer to the Wearside shipyard workers, who during World War II were brought into shipbuilding and regarded as taking work away from the Geordies on Tyneside. There has been very little academic work done on the Sunderland dialect. It was a site in the early research by Alexander John Ellis, who also recorded a local song called "Spottee". Ellis considered Sunderland close to a dialectal border, and placed the nearby village of Ryhope in a separate dialectal region together with areas that would now be seen as speaking Pitmatic. In the Survey of English Dialects, the nearby town of Washington was surveyed. The researcher of the site, Stanley Ellis, later worked with police on analysing the speech in a tape sent to the police during the Yorkshire Ripper investigation, which became known as the Wearside Jack tape because the police switched their investigation to Wearside after Ellis's analysis of the tape. To people outside the region, the differences between Makem and Geordie dialects often seem marginal, but there are many notable differences. There is even a small but noticeable difference in pronunciation and grammar between the dialects of North and South Sunderland (for example, the word "something" in North Sunderland is often "summik" whereas a South Sunderland speaker may often prefer "summat" and people from the surrounding areas prefer "summit").