sentence1: What insects live in the desert ? How do they survive ?
sentence2: -LSB- math -RSB- x -LSB- / math -RSB- and -LSB- math -RSB- y -LSB- / math -RSB- are non zero integers , what is -LSB- math -RSB- x \ % -LSB- / math -RSB- of -LSB- math -RSB- y \ % -LSB- / math -RSB- of -LSB- math -RSB- 2000 -LSB- / math -RSB- ?