Help:P2437
Help page for number of seasons (P2437) 
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Questa proprietà indica il numero di stagioni di un programma radiofonico o televisivo. Dovrebbe sempre essere un valore numerico, senza contenere altri simboli o indicazioni. È possibile aggiungere qualificatori, ad esempio data o criterio utilizzato, o riferimenti.
Series in production
The number of season should be qualified:
- with point in time (P585) to indicate when a given number is correct.
- with criterion used (P1013) to indicate what this refers to. Values can be:
If there are several values for the same criterion used (P1013), the most recent one should get preferred rank.
Series that ended
In general, only the total number of seasons is stored.
If there are several ways of counting this, there may be multiple values in rare cases.
Items for seasons
Items for series sometimes list items for each season with has part(s) (P527). This can provide further information.