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:
| rnd | date | race name | length | track | location | type | pole position | winning driver |
| 1 | may 24 , 1981 | indianapolis 500 - mile race | - | indianapolis motor speedway | speedway , indiana | paved oval | bobby unser | bobby unser |
| 2 | june 21 , 1981 | van scoy diamond mines 500 | - | pocono international raceway | long pond , pennsylvania | paved oval | a j foyt | a j foyt |
| 3 | august 15 , 1981 | tony bettenhausen 100 | - | illinois state fairgrounds | springfield , illinois | dirt oval | tom bigelow | george snider |
| 4 | august 30 , 1981 | duquoin 100 | - | duquoin state fairgrounds | du quoin , illinois | dirt oval | bill engelhart | rich vogler |
| 5 | september 12 , 1981 | hoosier hundred | - | grounds indiana state fair | indianapolis , indiana | dirt oval | larry rice | larry rice |
Title:
1981 - 82 usac championship car season
Statement:
in thr august 15 , 1981 race , tom bigelow had the pole position
Answer:
supported