Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE Faculty_participates_in (facID VARCHAR)
TABLE: CREATE TABLE Faculty (facID VARCHAR, fname VARCHAR, lname VARCHAR)

### Question ###
How many activities does Mark Giuliano participate in?

### Accurate SQL ###

SELECT COUNT(*) FROM Faculty AS T1 JOIN Faculty_participates_in AS T2 ON T1.facID = T2.facID WHERE T1.fname = "Mark" AND T1.lname = "Giuliano"