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:
| Date | Visitor | Score | Home | Record |
| --- | --- | --- | --- | --- |
| April 4 | St. Louis Blues | 1–7 | Chicago Black Hawks | 1-0 |
| April 5 | St. Louis Blues | 0–1 | Chicago Black Hawks | 2-0 |
| April 7 | Chicago Black Hawks | 5–2 | St. Louis Blues | 3-0 |
| April 8 | Chicago Black Hawks | 3–5 | St. Louis Blues | 3-1 |
| April 10 | St. Louis Blues | 1–6 | Chicago Black Hawks | 4-1 |
Question:
What is the visitor team on April 4?
Answer:
St. Louis Blues