Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: Archaeologists have uncovered the complete skeleton of a 17th-century camel that was likely used in the second Ottoman-Habsburg war. They believe the camel - the first intact camel skeleton found in central Europe - may have been left in the town of Tulln for trading after the siege of Vienna in 1683. In a country where cows dominate the rural landscape, the discovery in an Austrian cellar shocked scientists. The researchers described it as a 'sunken ship in the desert'. Archaeologists have uncovered the complete skeleton of an 'alien' 17th-century camel that was likely used in the second Ottoman-Habsburg war. They believe the camel - the first intact camel skeleton found in central Europe - may have been left in the town of Tulln for trading after the siege of Vienna in 1683Scientists say camel was left in Tulln after the 1683 siege of ViennaIt would have shocked residents as camels were an alien species'They didn't know what to feed it or whether one could eat it,' study saidOttoman army used camels for transportation and as riding animals 
 Question:Genetic analysis of the beast show that it was a Bactrian-dromedary hybrid – a breed popular in the _ army at the time.

Ottoman