question: What can products not use if they want to avoid infringing on patent rights ?
answer: the -LSB- MPEG Layer-3 -RSB- standard
turker_answer: Products can not use the -LSB- MPEG Layer-3 -RSB- standard if they want to avoid infringing on patent rights .
rule-based: Products can not use the -LSB- MPEG Layer-3 -RSB- standard if they want to avoid infringing on patent rights .