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:
| Latitude | Longitude | City | State | Country |
| --- | --- | --- | --- | --- |
| 79°59′N | 85°56′W | Eureka | Nunavut | Canada |
| 78°55′N | 11°56′E | Ny-Ålesund | Svalbard | Norway |
| 78°13′N | 15°39′E | Longyearbyen | Svalbard | Norway |
| 77°28′N | 69°14′W | Qaanaaq | Greenland | Denmark |
| 76°25′N | 82°54′W | Grise Fiord | Nunavut | Canada |
| 73°30'N | 80°31'E | Dikson | Krasnoyarsk Krai | Russia |
| 72°47'N | 56°09'W | Upernavik | Greenland | Denmark |
| 71°39'N | 128°52'E | Tiksi | Sakha Republic | Russia |
| 71°18′N | 156°46′W | Barrow | Alaska | United States |
| 70°59'N | 25°59'E | Honningsvåg | Finnmark | Norway |
| 70°40′N | 23°41′E | Hammerfest | Finnmark | Norway |
| 70°12′N | 148°31′W | Deadhorse | Alaska | United States |
| 70°05′N | 27°53′E | Nuorgam | Lapland | Finland |
| 70°05′N | 29°44′E | Vadsø | Finnmark | Norway |
Question:
If the latitude is 71°18′n, what is the longitude?
Answer:
156°46′W