Task: Table-QA (source dataset: TableBench)

Task: 
You are given a table containing structured data and a natural language question referring to the table. Your goal is to analyze the table and provide an accurate and concise answer based on the given data.

Instructions:
1. Understand the Table: Examine the structure, headers, and data in the table. Identify relevant columns and rows related to the question.
2. Interpret the Question: Determine whether the question requires direct retrieval, aggregation, comparison, sorting, filtering, or inference.
3. Extract the Answer: Use logical reasoning and numerical operations (if necessary) to derive the correct response from the table.
4. Format the Answer: No explanation, return the answer in a structured JSON format: {"answer": <answer>}. If the question cannot be answered due to missing or ambiguous data, return a JSON response with {"answer": null}.

Table:
| Year                 | Competition               | Venue                              | Position             | Event                | Notes                |
|:---------------------|:--------------------------|:-----------------------------------|:---------------------|:---------------------|:---------------------|
| Representing Algeria | Representing Algeria      | Representing Algeria               | Representing Algeria | Representing Algeria | Representing Algeria |
| 2001                 | World Youth Championships | Debrecen, Hungary                  | 26th                 | 10,000 m walk        | 48:40.35             |
| 2004                 | World Race Walking Cup    | Naumburg, Germany                  | –                    | 20 km walk           | DQ                   |
| 2006                 | African Championships     | Bambous, Mauritius                 | 6th                  | 20 km walk           | 1:29:34              |
| 2007                 | All-Africa Games          | Algiers, Algeria                   | 3rd                  | 20 km walk           | 1:25:12              |
| 2007                 | Pan Arab Games            | Cairo, Egypt                       | 3rd                  | 20,000 m walk        | 1:43:35.8            |
| 2008                 | African Championships     | Addis Ababa, Ethiopia              | 1st                  | 20 km walk           | 1:22:55 (CR)         |
| 2008                 | Olympic Games             | Beijing, China                     | 48th                 | 20 km walk           | 1:32:21              |
| 2009                 | Universiade               | Belgrade, Serbia                   | 15th                 | 20 km walk           | 1:26:21              |
| 2010                 | African Championships     | Nairobi, Kenya                     | 5th                  | 20 km walk           | 1:24:53              |
| 2012                 | African Championships     | Addis Ababa, Ethiopia              | 3rd                  | 20 km walk           | ?                    |
| 2014                 | African Championships     | Marrakech, Morocco                 | 3rd                  | 20 km walk           | 1:27:48              |
| 2015                 | African Games             | Brazzaville, Republic of the Congo | –                    | 20 km walk           | DNF                  |
| 2016                 | African Championships     | Durban, South Africa               | 7th                  | 20 km walk           | 1:26:17              |
| 2018                 | African Championships     | Asaba, Nigeria                     | 6th                  | 20 km walk           | 1:28.38              |

Question:
In which year did the athlete achieve their personal best time in the 20 km walk event at the African Championships?


id: ad90ad414ff991cd2c1aed8154091536
qtype: FactChecking
label: 2008