Fact or dimension?

Below are the column names for two tables taken from the snowflake schema proposed by Tsvetanka Georgieva-Trifonova et al. to analyze academic bibliographic data. Your goal is to select the statement below that correctly identifies tables A and B as fact or dimension tables and the reason why.

Table A	Table B
InstitutionID	PaperID
InstitutionName	JournalID
City	ProceedingsID
Country	InstitiutionID
	PublisherID
	CountOfAuthorID
	CountOfPapers
	CountOfCitations