Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Airing date | English title (Chinese title) | Number of episodes | Genre | Official website |
| --- | --- | --- | --- | --- |
| 19 Jan- 13 Feb | A Measure of Love 緣來沒法擋 | 20.0 | Modern drama | Official website |
| 16 Feb- 9 May | Secret of the Heart 天地豪情 | 62.0 | Costume drama | Official website |
| 11 May- 9 Jun | Crimes of Passion 掃黃先鋒 | 22.0 | Modern action | Official website |
| 6 Jul- 31 Jul | Armed Reaction 陀槍師姐 | 20.0 | Modern action | Official website |
| 3 Aug- 28 Aug | Rural Hero 離島特警 | 20.0 | Modern action | Official website |
| 31 Aug- 10 Oct | Healing Hands 妙手仁心 | 32.0 | Modern drama | Official website |
| 12 Oct- 4 Dec | Burning Flame 烈火雄心 | 43.0 | Modern action | Official website |
| 7 Dec 1998- 1 Jan 1999 | Till When Do Us Part 冤家宜結不宜解 | 20.0 | Modern drama | website |
Question:
What's the airing date of Armed Reaction 陀槍師姐 with 20 episodes in the Modern Action genre having an official website?
Answer:
6 Jul- 31 Jul