Give you a statement and table with its title in Markdown format, please determine whether the statement is supported or refuted by, or is unrelated to the table. It'a binary classification problem, you should choose the answer between supported and refuted. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| school | location | mascot | enrollment | ihsaa class | county | year joined | previous conference |
| manchester | north manchester | squires | 434 | aa | 85 wabash | 1976 | northern lakes |
| northfield | wabash | norsemen | 380 | aa | 85 wabash | 1971 | none (new school) |
| north miami | denver | warriors | 348 | a | 52 miami | 1971 | mid - indiana |
| rochester community | rochester | zebras | 615 | aaa | 25 fulton | 1987 | northern lakes |
| southwood | wabash | knights | 427 | aa | 85 wabash | 1976 | mid - indiana |
| tippecanoe valley | akron | vikings | 600 | aaa | 43 kosciusko | 1976 | independents |
| wabash | wabash | apaches | 455 | aa | 85 wabash | 2006 | central indiana |
| whitko | south whitley | wildcats | 613 | aa | 92 whitley | 1976 | independents |
Title:
three rivers conference (indiana)
Statement:
the earliest a school joined the three rivers conference was 1971
Answer:
supported