Assertion: whistle | /r/HasProperty | essential
Facets:
value: along with the vertically striped jersey
type: OTHER
value: in refereeing
type: LOCATION
Source sentences:
text: Minister of Tourism of La Gomera, Fernando Mendez, asserted that whistling is essential to the tourism industry of La Gomera.
text: In this capacity, he often had problems with his whistle, which, in refereeing, along with the vertically striped jersey, is an essential piece of equipment.