instruction:
In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
question:
Black adults have three to _ times greater incidence of bacteremia, compared with white adults.
answer:
five

question:
Many comets have _ tails.
answer:
two

question:
Pangolins walk on all _ of their stout limbs, which are adapted for digging.
answer:
four