Statements of Income - USD ($)	3 Months Ended		9 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2020	Oct. 31, 2019
REVENUES
Royalty income	$ 5,736,151	$ 6,488,299	$ 15,090,006	$ 26,151,926
Interest	1,104	72,542	34,397	220,011
Total revenues	5,737,255	6,560,841	15,124,403	26,371,937
EXPENSES
Expenses	610,856	410,645	1,710,380	1,399,766
Net income	$ 5,126,399	$ 6,150,196	$ 13,414,023	$ 24,972,171
WEIGHTED AVERAGE NUMBER OF UNITS OUTSTANDING	13,120,010	13,120,010	13,120,010	13,120,010
Net income per unit (Note 2) (in dollars per unit)	$ 0.3907	$ 0.4688	$ 1.0224	$ 1.9034
Distribution declared per unit (Note 3) (in dollars per unit)	$ 0.3600	$ 0.8700	$ 0.9700	$ 1.9700