Assertion: whistle | /r/HasProperty | constructed
Facets:
Source sentences:
text: Stephenson subsequently called a meeting of directors and accepted the suggestion of the company manager, Ashlin Bagster, that a horn or whistle which could be activated by steam should be constructed and fixed to the locomotives.
text: One such whistle is designed so that the different tones are produced out of phase with one another, alternately canceling and reinforcing each other, to produce a trilling effect.
text: Stephenson subsequently called a meeting of directors and accepted the suggestion of the company manager, Ashlin Bagster, that a horn or whistle which could be activated by steam should be constructed and fixed to the locomotives.