S (~,~,CP (~,who [1](Cb (~,that [1](Y (~,does [1](VP (~,like [1](t ,~,~),~),~,~),IP (~,Alice [1](Ib ,~,~),~)),~,~),Cb (~,does2 [1](Y (~,t2 [1](VP (~,think [1](Cb ,~,~),~),~,~),IP (~,Carol [1](Ib ,~,~),~)),~,~),~)),~,~),~))