Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Congress | Short title | Bill number(s) | Date introduced | Sponsor(s) | # of cosponsors |
| --- | --- | --- | --- | --- | --- |
| 111th Congress | Stem Cell Research Enhancement Act of 2009 | H.R. 873 | February 4, 2009 | Rep. Diana DeGette (D-CO) | 113.0 |
| 111th Congress | Stem Cell Research Enhancement Act of 2009 | S. 487 | February 26, 2009 | Sen. Tom Harkin (D-IA) | 10.0 |
| 110th Congress | Stem Cell Research Enhancement Act of 2007 | H.R. 3 | January 5, 2007 | Rep. Diana DeGette (D-CO) | 217.0 |
| 110th Congress | Stem Cell Research Enhancement Act of 2007 | S. 5 | January 4, 2007 | Sen. Harry Reid (D-NV) | 41.0 |
| 109th Congress | Stem Cell Research Enhancement Act of 2005 | H.R. 810 | February 15, 2005 | Rep. Michael Castle (R-DE) | 200.0 |
| 109th Congress | Stem Cell Research Enhancement Act of 2005 | S. 471 | February 28, 2005 | Sen. Arlen Specter (R-PA) | 43.0 |
Question:
Who was the sponsor for the bill introduced February 28, 2005 with cosponsors less than 200?
Answer:
Sen. Arlen Specter (R-PA)