Task: Question Answering
Input (English): Passage: In Cuchillo, New Mexico, 1887, a group of five Outlaws, led by Henry, are robbing the town bank, which culminates in a shoot-out with the residents of the town. A posse of bounty hunters, led by Josiah, is formed and are in hot pursuit, "only being a half-day behind them".
The outlaws are now down to four after one of the men was shot dead after the robbery.  They are met on the path by a couple, who are the aunt and uncle of Charlie, and brought them supplies.  They find out that there is a bounty of 8000 dollars on their heads. They shoot the couple so they cannot turn them in for the reward money.
The posse comes upon the scene of the dead couple, and Josiah talks to the couples' granddaughter Lulu, who hid in the bushes when her grandparents were shot.  She tells them that they are headed East through White Sands, to make them more difficult to track.
The outlaws are down to three, when one passes out and they shoot him to put him out of his misery. They spot the Tildon farm, where Preacher George and Ada live with their teenage daughters, Charlotte and Florence, and make plan to descend on them at dark.
They burst in to the house, and start eating and drinking whiskey and intend to have relations with the women. Florence catches Henry's eye and he calls her to sit on his lap.  Ada and George plead with the men because she is only 15, but both are brutally subdued by Charlie and Little Joe. George says he is the preacher of the chapel on the property, but nobody attends now because the town was ravaged by consumption. 
Question: Who is the leader of the group that is pursuing the outlaws?
Output (English): Josiah.