Lovely goal from Spurs, with Lamela and Eriksen combining before Lamela played Kane through to score. Especially enjoyable given the commentator slagging Lamela for not having the intensity to play at Anfied.
The bigger issue though is that this is a classic lesson in why you can't play a back 3 against a single striker. Liverpool have three guys marking Kane, that means they are outnumbered in central midfield, where Spurs have five when Eriksen and Lamela tuck in (which is often) That's allowing Spurs to control the tempo and challenge the back 3 with runners from deep.
That said, if you are going to play a back 3 against a single striker, you have to actually mark that striker. No way Kane should have found that much space given the respective tactical alignments.