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 | Film | Director | Producer | Writer | Notes |
| --- | --- | --- | --- | --- | --- |
| 1953 | The Sea Around Us | Yes | Yes | Yes | Documentary\nAcademy Award for Best Documentary Feature |
| 1954 | Dangerous Mission |  | Yes |  |  |
| 1956 | The Animal World | Yes | Yes | Yes | Documentary |
| 1957 | The Story of Mankind | Yes | Yes | Yes | Documentary |
| 1960 | The Big Circus |  | Yes | Yes |  |
| 1960 | The Lost World | Yes | Yes | Yes |  |
| 1961 | Voyage to the Bottom of the Sea | Yes | Yes | Yes |  |
| 1962 | Five Weeks in a Balloon | Yes | Yes | Yes |  |
| 1972 | The Poseidon Adventure | Yes | Yes |  | Directed action sequences only\nNominated—Golden Globe Award for Best Motion Picture – Drama |
| 1974 | The Towering Inferno |  | Yes |  | Nominated—Academy Award for Best Picture |
| 1978 | The Swarm | Yes | Yes |  |  |
| 1979 | Beyond the Poseidon Adventure | Yes | Yes |  |  |
| 1980 | When Time Ran Out |  | Yes |  |  |
| 1983 | Cave-In! |  | Yes |  |  |
Question:
how many films did irwin allen direct, produce and write?
Answer:
6