Give you a statement and table with its title in Markdown format, please determine whether the statement is supported or refuted by, or is unrelated to the table. It'a binary classification problem, you should choose the answer between supported and refuted. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| model | build year | top speed (in operation) （km / h） | power output （kw） | total production |
| 6y2 | 1958-1961 | 101 | 4740 | 25 |
| 6 g1 | 1971 | 120 | 5100 | 2 |
| 6 g | 1973 | 112 | 5400 | 40 |
| 6k | 1986 - 1987 | 100 | 5100 | 85 |
| 8 g | 1987 - 1990 | 100 | 23200 | 100 |
| 8k | 1987 | 100 | 23200 | 150 |
Title:
list of locomotives in china
Statement:
model 6k was built 2 years before model 6 g
Answer:
refuted