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:
| speed | craft | pilot | location | date |
| - | bluebird k7 | donald campbell | ullswater | 23 july 1955 |
| - | bluebird k7 | donald campbell | lake mead | 16 november 1955 |
| - | bluebird k7 | donald campbell | coniston water | 19 september 1956 |
| - | bluebird k7 | donald campbell | coniston water | 7 november 1957 |
| - | bluebird k7 | donald campbell | coniston water | 10 november 1958 |
| - | bluebird k7 | donald campbell | coniston water | 14 may 1959 |
| - | bluebird k7 | donald campbell | lake dumbleyung | 31 december 1964 |
Title:
bluebird k7
Statement:
the pilot did not use a bluebird k7 at lake mead
Answer:
refuted