2017–18 National League 1
{'<entity_0>': '2017–18 National League 1', '<entity_1>': 'rugby union'}
[['2017–18 National League 1', 'sport', 'rugby union']]
The <entity_0>, known for sponsorship reasons as the SSE National League 1 is the ninth season of the third tier of the English <entity_1> system, since the professionalised format of the second tier RFU Championship was introduced; and is the 31st season since league rugby began in 1987.
['sports season']