Question: How many entries are shown for date of successors formal installation where successor is john w. walker (dr)?
Schema: create table table_225099_3 (date_of_successors_formal_installation varchar, successor varchar, PRIMARY KEY (date_of_successors_formal_installation))
SQL: select count(date_of_successors_formal_installation) from table_225099_3 where successor = "john w. walker (dr)"