Assertion: bowler hat | /r/HasProperty | worn with sack suits
Facets:
Source sentences:
text: Silk top hats remained a requirement for upper class formal wear; soft felt Homburgs or stiff bowler hats were worn with lounge or sack suits.
text: Top hats remained a requirement for upper class formal wear; soft felt Homburgs or stiff bowler hats were worn with lounge or sack suits, and flat straw boaters were worn for casual occasions.