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:
| county | tunnel | type | length (imperial) | date of opening |
| londonderry | castlerock | rail | 668 yd | 1845 - 1853 |
| londonderry | downhill | rail | 307 yd | 1845 - 1846 |
| armagh | lissummon | rail | 1759 yd | early 1860s |
| down | binnian tunnel | aqueduct | 2.5 miles | 1948 - 1952 |
| antrim | whitehead | rail | 145 yd | 1862 - 1994 |
| tyrone | dungannon | rail | 800 yd | 1862 |
Title:
list of tunnels in the united kingdom
Statement:
in the list of tunnels in northern ireland , united kingdom , the longest tunnel is based in county down
Answer:
supported