Sentence:  When he had given the call a few moments thought , he went into the kitchen to ask Mrs. Yamata to prepare tea and sushi for the visitors , using the <WSD>formal</WSD> English china and the silver tea service which had been donated to the mission , then he went outside to inspect the grounds . 
Meaning of the word marked with <WSD> tags:  being in accord with established forms and conventions and requirements (as e.g. of formal dress)