user
Instruction
This is a table fact verification task. The goal of this task is to distinguish whether the given statement is entailed or refuted by the given table.


Table
Table Title: bitburger open
Table Content:
| year | men 's singles | women 's singles | men 's doubles | women 's doubles | mixed doubles |
| --- | --- | --- | --- | --- | --- |
| 1988 | kim brodersen | katrin schmidt | markus keck robert neumann | katrin schmidt nicole baldewein | markus keck katrin schmidt |
| 1989 | sörgard | katrin schmidt | stefan frey robert neumann | birgitta lehnert monica halim | chen jin katrin schmidt |
| 1998 | yong yudianto | karolina ericsson | michael keck christian mohr | erica van den heuvel judith meulendijks | michael keck nicol pitro |
| 1999 | oliver pongratz | zheng yaqiong | quinten van dalm dennis lens | britta andersen lene mork | chris bruil erica van den heuvel |
| 2000 | xie yangchun | xu huaiwen | michael søgaard joachim fischer nielsen | claudia vogelgsang xu huaiwen | michael keck erica van den heuvel |
| 2001 | niels christian kaldau | pi hongyan | michael søgaard michael lamp | neli boteva elena nozdran | chris bruil lotte bruil - jonathans |
| 2002 | chen gang | pi hongyan | simon archer flandy limpele | mia audina lotte bruil - jonathans | nathan robertson gail emms |
| 2003 | dicky palyama | xu huaiwen | michał łogosz robert mateusiak | nicole grether juliane schenk | frederik bergström johanna persson |
| 2004 | niels christian kaldau | xu huaiwen | simon archer anthony clark | kamila augustyn nadieżda kostiuczyk | rasmus mangor andersen britta andersen |
| 2005 | kasper ødum | xu huaiwen | tony gunawan halim haryanto | nicole grether juliane schenk | vladislav druzhchenko johanna persson |
| 2006 | ronald susilo | xu huaiwen | michał łogosz robert mateusiak | jiang yanmei li yujia | robert mateusiak nadieżda kostiuczyk |
| 2007 | lu yi | wang yihan | mathias boe carsten mogensen | yang wei zhang jiewen | kristof hopp birgit overzier |
| 2008 | chetan anand | maria febe kusumastuti | mathias boe carsten mogensen | helle nielsen marie roepke | diju valiyaveetil jwala gutta |
| 2009 | jan ø jørgensen | juliane schenk | rupesh kumar sanave thomas | helle nielsen marie roepke | mikkel delbo larsen mie schjoett - kristensen |
| 2010 | chen long | liu xin | mathias boe carsten mogensen | pan pan tian qing | zhang nan zhao yunlei |
| 2011 | hans - kristian vittinghus | li xuerui | bodin isara maneepong jongjit | mizuki fujii reika kakiiwa | chan peng soon goh liu ying |
| 2012 | chou tien - chen | juliane schenk | ingo kindervater johannes schoettler | wang rong zhang zhibo | anders kristiansen julie houmann |
| 2013 | chou tien - chen | nichaon jindapon | mads conrad - petersen mads pieler kolding | eefje muskens selena piek | michael fuchs birgit michels |


Statement
katrin schmidt and pi hongyan both play 4 time in the women 's single


Answer Format
The final answer should be either "entailed" or "refuted" and use the following format:
```json
{
    "answer": "entailed" or "refuted"
}
```
rule
["refuted"]