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:
| class | wheel arrangement | fleet number (s) | manufacturer | serial numbers | year made | quantity made | quantity preserved |
| mallet and simple articulated locomotives | mallet and simple articulated locomotives | mallet and simple articulated locomotives | mallet and simple articulated locomotives | mallet and simple articulated locomotives | mallet and simple articulated locomotives | mallet and simple articulated locomotives | mallet and simple articulated locomotives |
| z | 2 - 6 - 6 - 2 | 3000 - 3015 | baldwin | 30566…31557 | 1907 | 16 | 0 |
| z - 1 | 2 - 6 - 6 - 2 | 3100 - 3105 | baldwin | 34389…34483 | 1910 | 6 | 0 |
| z - 2 | 2 - 8 - 8 - 2 | 4000 - 4004 | baldwin | 34382 - 34386 | 1910 | 5 | 0 |
| z - 3 | 2 - 8 - 8 - 2 | 4005 - 4025 | alco | 52839…62472 | 1913 , 1917 , 1920 | 21 | 0 |
| z - 4 | 2 - 8 - 8 - 2 | 4500 - 4503 | alco | 64373 - 64376 | 1923 | 4 | 0 |
| z - 5 | 2 - 8 - 8 - 4 | 5000 | alco | 67578 | 1928 | 1 | 0 |
| z - 5 | 2 - 8 - 8 - 4 | 5000 - 5011 | baldwin | 61292…61495 | 1930 | 11 | 0 |
| z - 6 | 4 - 6 - 6 - 4 | 5100 - 5120 | alco | 68760 - 68780 | 1936 - 1937 | 21 | 0 |
| z - 7 | 4 - 6 - 6 - 4 | 5121 - 5126 | alco | 69540 - 69545 | 1941 | 6 | 0 |
| z - 8 | 4 - 6 - 6 - 4 | 5130 - 5149 | alco | 70143…71962 | 1943 - 44 | 20 | 0 |
Title:
northern pacific railway locomotives
Statement:
in 1928 , only one (1) quantity of class z - 5 was manufactured by alco
Answer:
refuted