Chaining of comparison operators

Comparison operations in python can be chained together. They can be used to check if a number is within a range, if 3 numbers are not equal to each other, etc.
if 10 <= a <= 20:     # Equivalent to 10 <= a and a <= 20
	print('variable is in [10; 20] range')
	print('Great!')
if a != b != c:       # Equivalent to a != b and b != c
	print('b is different from both a and c')
 

Challenge

Given the age of a person, we would like to know what would be their stage of life:
Year range
Stage
0-1
Infant
2-4
Toddler
5-12
Child
13-19
Teen
20-39
Adult
40-59
Middle Age Adult
60+
Senior Adult
 
Input is given as a single integer number. Print the stage of life of that person.
Input
Output
1
Infant
41
Middle Age Adult
 

Constraints

Time limit: 2 seconds

Memory limit: 512 MB

Output limit: 1 MB

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