Misc: What carries blood to the heart?

Questions

What is a mature horse below the height of 14 and a half hands called?

Who had top ten hits in the 1970s with All right now, My brother Jake and Wishing Well?

From which language does the word ketchup come?

Who composed the music for A fistful of Dollars, For a few dollars more and The good the bad and the ugly?

Which country celebrates nov 2nd as a National holiday - The day of the Dead?