In this task, you will be given sentences in which your task is to recognize the name of a person. Note that Twitter names shouldn't be considered as people's names. Although there might be several correct answers, you need to write one of them.

Example Input:  Rhubarb pioneer dies : Renowned rhubarb grower David Westwood has died aged 74 . http://t.co/6QknPCXm
Example Output: David Westwood

Example Input:  I wanna be robbie Williams when I 'm older #robbieisalegend x
Example Output: robbie Williams

Example Input:  Ukraine rebel commander Alexander Khodakovsky acknowledges fighters had BUK missile #MH17 http://t.co/coLMEIN4UU http://t.co/D0k30M21SO
Example Output:
Alexander Khodakovsky