eq { count { filter_eq { filter_eq { all_rows ; axle arrangement ; 2 ′ b n2v } ; axle arrangement ; 2 ′ b n2v } } ; 3 } = true
select the rows whose axle arrangement record fuzzily matches to 2 ′ b n2v . among these rows , select the rows whose axle arrangement record fuzzily matches to 2 ′ b n2v . the number of such rows is 3 .