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:
|   Unnamed: 0 |   Average population (x 1000) | Live births   |   Deaths |   Natural change |   Crude birth rate (per 1000) |   Crude death rate (per 1000) |   Natural change (per 1000) |
|-------------:|------------------------------:|:--------------|---------:|-----------------:|------------------------------:|------------------------------:|----------------------------:|
|         1970 |                            38 | 761           |      299 |              462 |                          20   |                           7.9 |                        12.2 |
|         1975 |                            42 | 857           |      317 |              540 |                          20.4 |                           7.5 |                        12.9 |
|         1980 |                            46 | 996           |      333 |              663 |                          21.7 |                           7.2 |                        14.4 |
|         1985 |                            51 | 1 104         |      370 |              734 |                          21.6 |                           7.3 |                        14.4 |
|         1990 |                            51 | 842           |      360 |              482 |                          16.4 |                           7   |                         9.4 |
|         1991 |                            50 | 789           |      335 |              454 |                          15.8 |                           6.7 |                         9.1 |
|         1992 |                            48 | 692           |      401 |              291 |                          14.4 |                           8.3 |                         6   |
|         1993 |                            46 | 617           |      448 |              169 |                          13.4 |                           9.7 |                         3.7 |
|         1994 |                            44 | 585           |      518 |               67 |                          13.3 |                          11.8 |                         1.5 |
|         1995 |                            43 | 537           |      501 |               36 |                          12.6 |                          11.8 |                         0.8 |
|         1996 |                            42 | 486           |      441 |               45 |                          11.7 |                          10.6 |                         1.1 |
|         1997 |                            41 | 483           |      374 |              109 |                          11.9 |                           9.2 |                         2.7 |
|         1998 |                            40 | 498           |      368 |              130 |                          12.6 |                           9.3 |                         3.3 |
|         1999 |                            39 | 448           |      376 |               72 |                          11.6 |                           9.7 |                         1.9 |
|         2000 |                            38 | 460           |      438 |               22 |                          12   |                          11.4 |                         0.6 |
|         2001 |                            39 | 562           |      438 |              124 |                          14.5 |                          11.3 |                         3.2 |
|         2002 |                            39 | 608           |      397 |              211 |                          15.5 |                          10.1 |                         5.4 |
|         2003 |                            39 | 625           |      386 |              239 |                          15.9 |                           9.8 |                         6.1 |
|         2004 |                            39 | 637           |      345 |              292 |                          16.5 |                           8.9 |                         7.6 |
|         2005 |                            38 | 548           |      369 |              179 |                          14.5 |                           9.7 |                         4.7 |
|         2006 |                            37 | 540           |      347 |              193 |                          14.5 |                           9.3 |                         5.2 |

Question:
How many years had a natural change of more than 150 and death of less than 350?


id: 1b9948ab23157ac39233152f4b88fba6
qtype: NumericalReasoning
label: 6