What concepts are described in the following sentence?

"The Chennai Egmore Express (train no. 15629/30) originates in Chennai and arrives to Guwahati Junction railway station weekly."

Return the answer as pairs of triples.
Chennai Egmore Express FREQUENCY Weekly
Chennai Egmore Express ORIGIN Chennai
Chennai Egmore Express TRAIN_NO. 15629/30
[TABLECONTEXT] [TITLE] Train services at the Guwahati Junction railway station
[TABLECONTEXT] TRAIN_NAME Chennai Egmore Express