Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Road race | Distance | Location | Country | Month held |
| --- | --- | --- | --- | --- |
| Xiamen International Marathon | Marathon | Xiamen | China | January |
| Dubai Marathon | Marathon | Dubai | United Arab Emirates | January |
| World's Best 10K | 10 km | San Juan | Puerto Rico | February |
| Tokyo Marathon | Marathon | Tokyo | Japan | February |
| Roma-Ostia Half Marathon | Half marathon | Rome | Italy | March |
| Lake Biwa Marathon | Marathon | Otsu | Japan | March |
| Nagoya Women's Marathon | Marathon | Nagoya | Japan | March |
| Rome Marathon | Marathon | Rome | Italy | March |
| Seoul International Marathon | Marathon | Seoul | South Korea | March |
| Lisbon Half Marathon | Half marathon | Lisbon | Portugal | March |
| Prague Half Marathon | Half marathon | Prague | Czech Republic | April |
| Paris Marathon | Marathon | Paris | France | April |
| Vienna City Marathon | Marathon | Vienna | Austria | April |
| Rotterdam Marathon | Marathon | Rotterdam | Netherlands | April |
| Boston Marathon | Marathon | Boston | United States | April |
| London Marathon | Marathon | London | United Kingdom | April |
| Yangzhou Jianzhen Half Marathon | Half marathon | Yangzhou | China | April |
| Hamburg Marathon | Marathon | Hamburg | Germany | April |
| Prague Marathon | Marathon | Prague | Czech Republic | May |
| Great Manchester Run | 10K | Manchester | United Kingdom | May |
| Giro di Castelbuono | 10 km | Castelbuono | Italy | July |
| Bogotá Half Marathon | Half marathon | Bogota | Colombia | July |
| Great North Run | Half marathon | Newcastle Upon Tyne | United Kingdom | September |
| Bogotá Women's 12K | 12 km | Bogotá | Colombia | September |
| Berlin Marathon | Marathon | Berlin | Germany | September |
| Portugal Half Marathon | Half marathon | Lisbon | Portugal | October |
| Chicago Marathon | Marathon | Chicago | United States | October |
| Beijing Marathon | Marathon | Beijing | China | October |
| Amsterdam Marathon | Marathon | Amsterdam | Netherlands | October |
| Great South Run | 10 miles | Portsmouth | United Kingdom | October |
| Frankfurt Marathon | Marathon | Frankfurt am Main | Germany | October |
| Istanbul Marathon | Marathon | Istanbul | Turkey | November |
| Fukuoka Marathon | Marathon | Fukuoka | Japan | December |
| Singapore Marathon | Marathon | Singapore | Singapore | December |
Question:
Where was the istanbul marathon?
Answer:
Istanbul