(1) What is a tree martin?
Answer: A bird (a type of swallow, Petrochelidon nigricans).
(2) What is a free-martin?
Answer: An infertile heifer (born with a male twin from it has acquired some cells in utero).
(3) What is a marten?
Answer: A weasel-like mammal native to northern hemisphere taiga forests.
(4) How many Theses did Martin Luther supposedly nail to the door of the church at Wittenberg in 1517?
Answer: 95.
(5) In what year was Martin Luther King Jr assassinated?
Answer: 1968.