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:
| Name | Parentage | Size | Flower colour | Flower type |
| --- | --- | --- | --- | --- |
| Cornish Snow | cuspidata × saluenensis | 04.0m² | white | single |
| Cornish Spring | cuspidata × saluenensis | 04.0m² | pink | single |
| Francie L | reticulata × saluenensis | 64.0m² | rose-pink | double |
| Freedom Bell | × williamsii | 06.5m² | red | semi-double |
| Inspiration | reticulata × saluenensis | 10.0m² | rose-pink | semi-double |
| Leonard Messel | reticulata × saluenensis | 16.0m² | rose-pink | semi-double |
| Royalty | japonica × reticulata | 01.0m² | light red | semi-double |
| Spring Festival | × williamsii, cuspidata | 10.0m² | pink | semi-double |
| Tom Knudsen | japonica × reticulata | 06.3m² | deep red | double paeony |
| Tristrem Carlyon | reticulata | 10.0m² | rose pink | double paeony |
Question:
how many cultivars are the colour "rose-pink?"
Answer:
4