SENTENCE STRUCTURE TABLE
SENTENCE : The longest-running Sampark kranti express of indian railways is a train that connects Chandigarh in Punjab to Trivandrum in Kerala, offering fewer stoppages and showcasing scenic beauty of countryside.
Subject : The longest running sampark kranti express of indian railways.
linking verb : is , object (source) : Chandigarh punjab
Verb : connects (action verb) , object (destination) : Trivandrum kerala , Manner : offering few stoppages , Description : showcasing beauty
a train : subject , relative pronoun : that