Generate a topic word for the given sentence. A topic word is usually the name of a person, place, animal, concept or object the sentence is focusing on.

Input: Consider Input: buick rendezvous was a midsize crossover suv.

Output: buick rendezvous


Input: Consider Input: sellapan ramanathan (tamil: செல்லப்பன் ராமநாதன்; (july 3, 1924 – august 22, 2016) was the sixth president of the republic of singapore.

Output: sellapan ramanathan


Input: Consider Input: rakesh sharma (born 13 january 1949) is a retired squadron leader in the indian air force.


Output: rakesh sharma