Table: california_ranches
Columns: concession
date
grantee
size
county

Question: Tell me the Grantee for san ysidro
SQL: SELECT "grantee" FROM california_ranches WHERE "concession" = 'san ysidro'

Question: Tell me the county for mariano castro
SQL: SELECT "county" FROM california_ranches WHERE "grantee" = 'mariano castro'

Question: Tell me the grantee for las pulgas in 1795
SQL: SELECT "grantee" FROM california_ranches WHERE "date" = 1795 AND "concession" = 'las pulgas'