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:
| Heat Rank | Lane | Swimmer | Country | Time | Overall Rank |
| --- | --- | --- | --- | --- | --- |
| 1.0 | 4.0 | Roland Schoeman | South Africa | 23.49 | 2 |
| 2.0 | 1.0 | Lars Frölander | Sweden | 23.66 | 4 |
| 3.0 | 7.0 | Jakob Andkjær | Denmark | 23.92 | 7 |
| 4.0 | 3.0 | Frédérick Bousquet | France | 24.0 | 11 |
| 5.0 | 6.0 | Lyndon Ferns | South Africa | 24.05 | 15 |
| 6.0 | 7.0 | Jernej Godec | Slovenia | 24.06 | T16 |
| 7.0 | 2.0 | Corney Swanepoel | New Zealand | 24.2 | 20 |
| 8.0 | 8.0 | Benjamin Starke | Germany | 24.25 | 23 |
Question:
Tell me the overall rank for roland schoeman
Answer:
2.0