This question contains six statements followed by four sets of combinations of three. Choose the set in which the combinations are most logically related:
A: All falcons fly high.
B: All falcons are blind.
C: All falcons are birds.
D: All birds are yellow.
E: All birds are thirsty.
F: All falcons are yellow.

After running around the city all day delivering invitations for the wedding I desperately needed to hit the sack. (Identify the meaning of the underlined phrase)