Table:
text: NCC Class A1
Building and withdrawal data
Building and withdrawal data
Number_ Builder Built Rebuilt Name_as_rebuilt Scrapped_Sold
64 Derby Cannot handle non-empty timestamp argument! 1905 Cannot handle non-empty timestamp argument! 1929 Trostan Cannot handle non-empty timestamp argument! 1954
65 Derby Cannot handle non-empty timestamp argument! 1905 Cannot handle non-empty timestamp argument! 1929 Knockagh Cannot handle non-empty timestamp argument! 1950
66 Derby Cannot handle non-empty timestamp argument! 1905 Cannot handle non-empty timestamp argument! 1930 Ben Madigan Cannot handle non-empty timestamp argument! 1954
68 Derby Cannot handle non-empty timestamp argument! 1908 Cannot handle non-empty timestamp argument! 1927 Slieve Gallion Cannot handle non-empty timestamp argument! 1947

Question: What is the built data to the scrapped information for the NCC class A1 that can't handle a non-empty timestamp argument! 1947 ?