useless trivia: What Word Means: A Thigh Bone?

Questions

In 1982 Mt Palomar Observatory first to detect Halley's comet on ---------- return. ?

In 1982 ---------- warns US will withdraw from UN if they vote to exclude Israel. ?

In 1982 Shultz warns US will withdraw from UN if they vote to exclude---------- . ?

In 1984 ---------- Bishop Desmond Tutu named Nobel Peace Prize winner. ?

In 1984 Anglican Bishop ---------- Tutu named Nobel Peace Prize winner. ?