question: Companies such as Huawei , ZTE and Lenovo have built what in Nanjing ?
answer: many R & D centers and institutions
turker_answer: Companies such as Huawei , ZTE and Lenovo have built many R & D centers and institutions in Nanjing .
rule-based: Companies such as Huawei , ZTE and Lenovo have built many R & D centers and institutions in Nanjing .