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:
| Player | Position | Date of Birth (Age) | Caps | Club/province |
| --- | --- | --- | --- | --- |
| Huw Bennett | Hooker | 11 June 1983 | 14.0 | Ospreys |
| Matthew Rees | Hooker | 9 December 1980 | 16.0 | Scarlets |
| Gareth Williams | Hooker | 19 December 1978 | 5.0 | Blues |
| Gethin Jenkins | Prop | 17 November 1980 | 53.0 | Blues |
| Adam Jones | Prop | 8 March 1981 | 55.0 | Ospreys |
| Duncan Jones | Prop | 18 September 1978 | 45.0 | Ospreys |
| Rhys M. Thomas | Prop | 31 July 1982 | 3.0 | Dragons |
| Ian Evans | Lock | 4 October 1984 | 8.0 | Ospreys |
| Ian Gough | Lock | 10 November 1976 | 45.0 | Ospreys |
| Alun Wyn Jones | Lock | 19 September 1985 | 18.0 | Ospreys |
| Deiniol Jones | Lock | 18 November 1977 | 4.0 | Blues |
| Robin Sowden-Taylor | Flanker | 9 June 1982 | 5.0 | Blues |
| Jonathan Thomas | Flanker | 27 December 1982 | 39.0 | Ospreys |
| Martyn Williams | Flanker | 1 September 1975 | 76.0 | Blues |
| Gareth Delve | Number 8 | 30 September 1982 | 4.0 | Gloucester |
| Ryan Jones ( c ) | Number 8 | 13 March 1981 | 16.0 | Ospreys |
| Alix Popham | Number 8 | 17 October 1979 | 32.0 | Scarlets |
| Gareth Cooper | Scrum-half | 7 May 1979 | 35.0 | Gloucester |
| Dwayne Peel | Scrum-half | 31 August 1981 | 59.0 | Scarlets |
| Mike Phillips | Scrum-half | 29 August 1982 | 28.0 | Ospreys |
| James Hook | Fly-half | 27 June 1985 | 20.0 | Ospreys |
| Stephen Jones | Fly-half | 8 December 1977 | 62.0 | Scarlets |
| Gavin Henson | Centre | 1 February 1982 | 23.0 | Ospreys |
| Sonny Parker | Centre | 27 August 1977 | 27.0 | Ospreys |
| Tom Shanklin | Centre | 24 November 1979 | 47.0 | Blues |
| Tom James | Wing | 11 April 1987 | 2.0 | Blues |
| Mark Jones | Wing | 7 November 1979 | 35.0 | Scarlets |
| Shane Williams | Wing | 26 February 1977 | 51.0 | Ospreys |
| Lee Byrne | Fullback | 1 June 1980 | 14.0 | Ospreys |
| Jamie Roberts | Fullback | 8 November 1986 | 0.0 | Blues |
Question:
Which Caps is the lowest one that has a Club/province of ospreys, and a Date of Birth (Age) of 19 september 1985?
Answer:
18.0