original_query: When did Alan Peter Schramm Cayetano serve as the Representative of Taguig–Pateros's 1st district?
query: When did Alan Peter Schramm Cayetano serve as the Representative of Taguig–Pateros's 1st district?
answer: Alan Peter Schramm Cayetano served as the Representative of Taguig–Pateros's 1st district from 2019 to the present, and previously from 1998 to 2007.