sentence1: I am green card holder My minor children are living abroad I have applied for their green card I do n't want to leave them alone and stay in USA ?
sentence2: How does -LSB- math -RSB- KI -LSB- / math -RSB- replace -LSB- math -RSB- Cl -LSB- / math -RSB- in -LSB- math -RSB- PbCl_2 -LSB- / math -RSB- in the reaction : -LSB- math -RSB- PbCl_2 + KI \ to PbI_2 + KCl -LSB- / math -RSB- ?