[tag=NN] [lemma=to] [tag=NN] [□] □
[tag=NN] [lemma=to] [tag=NN] [□=□] □
[tag=NN] [lemma=to] [tag=NN] [□ & □] □
The next test used a sputter coater to coat samples with greater than a 5-nm-thick layer of gold .