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:
| date released | polling institute | social democratic | socialist | green - communist | democratic and social centre | lead |
| october 6 , 1991 | election results | 50.6% 135 seats | 29.1% 72 seats | 8.8% 17 seats | 4.4% 5 seats | 21.5% |
| october 6 , 1991 | exit poll - rtp1 universidade católica | 48.0% - 51.9% | 28.5% - 31.5% | 7.5% - 10.0% | 4.5% - 5.5% | 19.5% - 20.4% |
| october 6 , 1991 | exit poll - tsf / expresso euroexpansão | 45.8% - 50.2% | 29.8% - 33.9% | 6.8% - 9.1% | 3.7% - 5.5% | 16.0% - 16.3% |
| october 6 , 1991 | exit poll - antena1 euroteste | 47.0% - 50.0% | 31.0% - 34.0% | 7.5% - 10.0% | 4.0% - 5.0% | 16.0% |
| september 28 , 1991 | euroteste | 47.3% | 35.5% | 8.5% | 4.1% | 11.8% |
| september 28 , 1991 | euroteste | 46.0% | 37.0% | 9.7% | 3.9% | 9.0% |
| september 28 , 1991 | euroexpansão | 44.0% | 33.0% | 9.0% | 6.0% | 11.0% |
| september 27 , 1991 | marktest | 43.1% | 32.8% | 7.7% | 4.6% | 10.3% |
| september 27 , 1991 | pluriteste | 41.2% | 34.7% | 8.4% | 8.1% | 6.5% |
| september 20 , 1991 | euroteste | 45.6% | 35.5% | 10.0% | 4.4% | 10.1% |
| september 20 , 1991 | marktest | 41.9% | 31.9% | 7.3% | 4.4% | 10.0% |
| september 16 , 1991 | pluriteste | 39.2% | 26.6% | 6.2% | 6.0% | 12.6% |
| september 16 , 1991 | euroteste | 45.1% | 34.5% | 10.2% | 5.2% | 10.6% |
| september 14 , 1991 | norma | 45.0% | 37.5% | 11.2% | 3.5% | 7.5% |
| august 28 , 1991 | euroexpansão / marktest | 35.3% | 36.8% | 8.7% | 4.9% | 1.5% |
| august 4 , 1991 | euroteste / jn | 47.5% | 37.8% | 12.3% | 8.2% | 7.7% |
Title:
portuguese legislative election , 1991
Statement:
in august 28 , 1991 polls showed that socialists took a slight lead over the social democratic group
Answer:
supported