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:
| no in series | no in season | title | directed by | written by | original air date | us viewers (millions) |
| 62 | 1 | a change is gonna come | rob corn | shonda rhimes | september 27 , 2007 | 20.93 |
| 63 | 2 | love / addiction | james frawley | debora cahn | october 4 , 2007 | 18.51 |
| 64 | 3 | let the truth sting | dan minahan | mark wilding | october 11 , 2007 | 19.04 |
| 65 | 4 | the heart of the matter | randy zisk | allan heinberg | october 18 , 2007 | 18.04 |
| 66 | 5 | haunt you every day | bethany rooney | krista vernoff | october 25 , 2007 | 18.17 |
| 67 | 6 | kung fu fighting | tom verica | stacy mckee | november 1 , 2007 | 19.31 |
| 68 | 7 | physical attraction , chemical reaction | jeff melman | tony phelan & joan rater | november 8 , 2007 | 19.5 |
| 69 | 8 | forever young | rob corn | mark wilding | november 15 , 2007 | 19.61 |
| 70 | 9 | crash into me (part 1) | michael grossman | shonda rhimes & krista vernoff | november 22 , 2007 | 14.11 |
| 71 | 10 | crash into me (part 2) | jessica yu | shonda rhimes & krista vernoff | december 6 , 2007 | 17.78 |
| 72 | 11 | lay your hands on me | john terlesky | allan heinberg | january 10 , 2008 | 17.68 |
| 73 | 12 | where the wild things are | rob corn | zoanne clack | april 24 , 2008 | 16.37 |
| 74 | 13 | piece of my heart | mark tinker | stacy mckee | may 1 , 2008 | 15.31 |
| 75 | 14 | the becoming | julie anne robinson | tony phelan & joan rater | may 8 , 2008 | 16.03 |
| 76 | 15 | losing my mind | james frawley | debora cahn | may 15 , 2008 | 15.55 |
| 77 | 16 | freedom (part 1) | rob corn | shonda rhimes | may 22 , 2008 | 18.09 |
Title:
grey 's anatomy (season 4)
Statement:
more than half of the episodes had at least 18 million viewers
Answer:
supported