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:
| Year | Event | Record | Athlete | Nationality |
| --- | --- | --- | --- | --- |
| 1964.0 | Javelin throw | 87.12 m & 91.72 m | Terje Pedersen | Norway |
| 1955.0 | 1500 m | 3:40.8 | László Tábori Gunnar Nielsen | Hungary Denmark |
| 1955.0 | 3000 m steeplechase | 8:45.4 | Pentti Karvonen | Finland |
| 1953.0 | Hammer throw | 62.36 m | Sverre Strandli | Norway |
| 1952.0 | Hammer throw | 61.25 m | Sverre Strandli | Norway |
Question:
What event is before 1964 and has an athlete of lászló tábori gunnar nielsen?
Answer:
1500 m