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:
| School | Location | Mascot | # / County | IHSAA Class | Year Joined | Previous Conference |
| --- | --- | --- | --- | --- | --- | --- |
| Caston | Fulton | Comets | 25 Fulton | A | 1978.0 | Three Rivers |
| Frontier | Chalmers | Falcons | 91 White | A | 1965.0 | none (new school) |
| North White | Monon | Vikings | 91 White | A | 1963.0 | none (new school) |
| Pioneer | Royal Center | Panthers | 09 Cass | A | 1963.0 | none (new school) |
| South Newton | Kentland | Rebels | 56 Newton | A | 1966.0 | none (new school) |
| Tri-County | Wolcott | Cavaliers | 91 White 1 | A | 1971.0 | none (new school) |
| West Central | Medaryville | Trojans | 66 Pulaski 2 | A | 1980.0 | Northwest Hoosier |
| Winamac Community | Winamac | Warriors | 66 Pulaski | A | 1981.0 | Northwest Hoosier |
Question:
which # / county is correct for year less than 1981 and chalmers as location?
Answer:
91 White