Task: Data-Imputation (source dataset: tablib)

Please fill in the missing value in the input table. The missing value is denoted by '[MISSING]'. Please only return the value filled in. Do not return the whole table.

No explanation, return the value filled in JSON format: {"value": "filled_value"}. 

Input Table:
| Port   | Unnamed: 1   | AF0           | AF1              | AF2        | AF3       | AF4            | AF5       | AF6       | AF7                  | AF8                    | AF9        | AF10            |   AF11 | AF12               | AF13        | AF14                    | AF15     | Unnamed: 18   | Unnamed: 19         | Unnamed: 20   |
|:-------|:-------------|:--------------|:-----------------|:-----------|:----------|:---------------|:----------|:----------|:---------------------|:-----------------------|:-----------|:----------------|-------:|:-------------------|:------------|:------------------------|:---------|:--------------|:--------------------|:--------------|
| None   | None         | SYS_AF        | TIM1/TIM2/LPTIM1 | TIM1/TIM2  | USART2    | I2C1/I2C2/I2C3 | SPI1/SPI2 | SPI3      | USART1/USART2/USART3 | LPUART1                | CAN1/TSC   | USB/QUADSPI     |    nan | COMP1/COMP2/SWPMI1 | SAI1        | TIM2/TIM15/TIM16/LPTIM2 | EVENTOUT | ADC           | COMP                | DAC           |
| PortA  | PA0          | None          | TIM2_CH1         | None       | None      | None           | None      | None      | USART2_CTS           | None                   | None       | None            |    nan | COMP1_OUT          | SAI1_EXTCLK | TIM2_ETR                | EVENTOUT | ADC1_IN5      | COMP1_INM           | None          |
| PortA  | [MISSING]    | None          | TIM2_CH2         | None       | None      | I2C1_SMBA      | SPI1_SCK  | None      | USART2_RTS/USART2_DE | None                   | None       | None            |    nan | None               | None        | TIM15_CH1N              | EVENTOUT | ADC1_IN6      | COMP1_INP           | None          |
| PortA  | PA2          | None          | TIM2_CH3         | None       | None      | None           | None      | None      | USART2_TX            | LPUART1_TX             | None       | QUADSPI_BK1_NCS |    nan | COMP2_OUT          | None        | TIM15_CH1               | EVENTOUT | ADC1_IN7      | COMP2_INM           | None          |
| PortA  | PA3          | None          | TIM2_CH4         | None       | None      | None           | None      | None      | USART2_RX            | LPUART1_RX             | None       | QUADSPI_CLK     |    nan | None               | SAI1_MCLK_A | TIM15_CH2               | EVENTOUT | ADC1_IN8      | COMP2_INP           | None          |
| PortA  | PA4          | None          | None             | None       | None      | None           | SPI1_NSS  | SPI3_NSS  | USART2_CK            | None                   | None       | None            |    nan | None               | SAI1_FS_B   | LPTIM2_OUT              | EVENTOUT | ADC1_IN9      | COMP1_INM/COMP2_INM | DAC1_OUT1     |
| PortA  | PA5          | None          | TIM2_CH1         | TIM2_ETR   | None      | None           | SPI1_SCK  | None      | None                 | None                   | None       | None            |    nan | None               | None        | LPTIM2_ETR              | EVENTOUT | ADC1_IN10     | COMP1_INM/COMP2_INM | DAC1_OUT2     |
| PortA  | PA6          | None          | TIM1_BKIN        | None       | None      | None           | SPI1_MISO | COMP1_OUT | USART3_CTS           | None                   | None       | QUADSPI_BK1_IO3 |    nan | TIM1_BKIN_COMP2    | None        | TIM16_CH1               | EVENTOUT | ADC1_IN11     | None                | None          |
| PortA  | PA7          | None          | TIM1_CH1N        | None       | None      | I2C3_SCL       | SPI1_MOSI | None      | None                 | None                   | None       | QUADSPI_BK1_IO2 |    nan | COMP2_OUT          | None        | None                    | EVENTOUT | ADC1_IN12     | None                | None          |
| PortA  | PA8          | MCO           | TIM1_CH1         | None       | None      | None           | None      | None      | USART1_CK            | None                   | None       | None            |    nan | SWPMI1_IO          | SAI1_SCLK_A | LPTIM2_OUT              | EVENTOUT | None          | None                | None          |
| PortA  | PA9          | None          | TIM1_CH2         | None       | None      | I2C1_SCL       | None      | None      | USART1_TX            | None                   | None       | None            |    nan | None               | SAI1_FS_A   | TIM15_BKIN              | EVENTOUT | None          | None                | None          |
| PortA  | PA10         | None          | TIM1_CH3         | None       | None      | I2C1_SDA       | None      | None      | USART1_RX            | None                   | None       | USB_CRS_SYNC    |    nan | None               | SAI1_SD_A   | None                    | EVENTOUT | None          | None                | None          |
| PortA  | PA11         | None          | TIM1_CH4         | TIM1_BKIN2 | None      | None           | SPI1_MISO | COMP1_OUT | USART1_CTS           | None                   | CAN1_RX    | USB_DM          |    nan | TIM1_BKIN2_COMP1   | None        | None                    | EVENTOUT | None          | None                | None          |
| PortA  | PA12         | None          | TIM1_ETR         | None       | None      | None           | SPI1_MOSI | None      | USART1_RTS/USART1_DE | None                   | CAN1_TX    | USB_DP          |    nan | None               | None        | None                    | EVENTOUT | None          | None                | None          |
| PortA  | PA13         | JTMS/SWDIO    | IR_OUT           | None       | None      | None           | None      | None      | None                 | None                   | None       | USB_NOE         |    nan | SWPMI1_TX          | None        | None                    | EVENTOUT | None          | None                | None          |
| PortA  | PA14         | JTCK/SWCLK    | LPTIM1_OUT       | None       | None      | I2C1_SMBA      | None      | None      | None                 | None                   | None       | None            |    nan | SWPMI1_RX          | SAI1_SD_B   | None                    | EVENTOUT | None          | None                | None          |
| PortA  | PA15         | JTDI          | TIM2_CH1         | TIM2_ETR   | USART2_RX | None           | SPI1_NSS  | SPI3_NSS  | USART3_RTS/USART3_DE | None                   | TSC_G3_IO1 | None            |    nan | SWPMI1_SUSPEND     | SAI1_FS_B   | None                    | EVENTOUT | None          | None                | None          |
| PortB  | PB0          | None          | TIM1_CH2N        | None       | None      | None           | SPI1_NSS  | None      | USART3_CK            | None                   | None       | QUADSPI_BK1_IO1 |    nan | COMP1_OUT          | SA1_EXTCLK  | None                    | EVENTOUT | ADC1_IN15     | None                | None          |
| PortB  | PB1          | None          | TIM1_CH3N        | None       | None      | None           | None      | None      | USART3_RTS/USART3_DE | LPUART1_RTS/LPUART1_DE | None       | QUADSPI_BK1_IO0 |    nan | None               | None        | LPTIM2_IN1              | EVENTOUT | ADC1_IN16     | COMP1_INM           | None          |
| PortB  | PB3          | JTDO/TRACESWO | TIM2_CH2         | None       | None      | None           | SPI1_SCK  | SPI3_SCK  | USART1_RTS/USART1_DE | None                   | None       | None            |    nan | None               | SAI1_SCK_B  | None                    | EVENTOUT | None          | COMP2_INM           | None          |
| PortB  | PB4          | NJTRST        | None             | None       | None      | I2C3_SDA       | SPI1_MISO | SPI3_MISO | USART1_CTS           | None                   | TSC_G2_IO1 | None            |    nan | None               | SAI1_MCLK_B | None                    | EVENTOUT | None          | COMP2_INP           | None          |
| PortB  | PB5          | None          | LPTIM1_IN1       | None       | None      | I2C1_SMBA      | SPI1_MOSI | SPI3_MOSI | USART1_CK            | None                   | TSC_G2_IO2 | None            |    nan | COMP2_OUT          | SAI1_SD_B   | TIM16_BKIN              | EVENTOUT | None          | None                | None          |
| PortB  | PB6          | None          | LPTIM1_ETR       | None       | None      | I2C1_SCL       | None      | None      | USART1_TX            | None                   | TSC_G2_IO3 | None            |    nan | None               | SAI1_FS_B   | TIM16_CH1N              | EVENTOUT | None          | COMP2_INP           | None          |
| PortB  | PB7          | None          | LPTIM1_IN2       | None       | None      | I2C1_SDA       | None      | None      | USART1_RX            | None                   | TSC_G2_IO4 | None            |    nan | None               | None        | None                    | EVENTOUT | None          | COMP2_INM           | None          |
| PortC  | PC14         | None          | None             | None       | None      | None           | None      | None      | None                 | None                   | None       | None            |    nan | None               | None        | None                    | EVENTOUT | None          | None                | None          |
| PortC  | PC15         | None          | None             | None       | None      | None           | None      | None      | None                 | None                   | None       | None            |    nan | None               | None        | None                    | EVENTOUT | None          | None                | None          |
| PortH  | PH3          | None          | None             | None       | None      | None           | None      | None      | None                 | None                   | None       | None            |    nan | None               | None        | None                    | EVENTOUT | None          | None                | None          |



row_idx: 2
col_idx: 1
col_name: Unnamed: 1
label: PA1
output: value: PA1
tablib_key: tables/job=github_000005/batch=009026/XItm9bXLUjnUCayVcBt-C9bPbRZ0qi6UaZjJi6ePB1Y=