Supplemental statistics for SPE paper

We received a question about our SPE paper that the length of a sentence (i.e., search text) used in Section 4 is unknown.

To supplement it, we show the statistics as follows:

Dataset	Source	#sentences	#chars/sentence	#bytes/sentence
English	Pizza&Chili Corpus	1,000,000	60.5	60.5
Japanese	BCCWJ	1,000,000	33.8	99.5