Circus : Tourist : Cno C$1$ C$2$ C$3$ City Gaza Nusirat Gaza Tno T$1$ T$2$ T$3$ T$4$ TS Name Sami Amal Majed Majed Ali Address Gaza Gaza Nusirat Gaza Rafa Age $5520314520$ Visiting : Tno Cno Date T$2$ T$1$ T$2$ T$2$ C$1$ C$3$ C$2$ C$3$ T$111-11-199815-10-199911-01-200311-01-200306-03-202106-03199711-11-200911-11-201912-12-2020$ C$2$ C$1$ C$3$ C$3$ T$3$ T$3$ T$4$ T$2$ C$2-$ Express each of the following queries in the relational algebra queries : $1-$ Determine Tno and Names of all Tourists who have not visited any Circus at all. $2-$ List all Tourists who have visited all Circus in Gaza. $3-$ List Tno and Names of Tourists who live in Nusirat and visited the Circus in Nusirat yesterday.