Table: oregon_ballot_measures_10
Columns: meas_num
passed
yes_votes
no_votes
yes
const_amd
type
description

Question: How many type classifications are given to the measure with the description, calling convention to revise state constitution? 
SQL: SELECT COUNT("type") FROM oregon_ballot_measures_10 WHERE "description" = 'Calling Convention to revise State Constitution'

Question: What is the yes percentage in the measure that had 35270 yes votes? 
SQL: SELECT "yes" FROM oregon_ballot_measures_10 WHERE "yes_votes" = 35270

Question: Was the constitution amended for the measure with description , to annex part of Washington county to multnomah? 
SQL: SELECT "const_amd" FROM oregon_ballot_measures_10 WHERE "description" = 'To Annex Part of Washington County to Multnomah'