Create an unknown label for unrecognized spans

[JarClass]

Hello,

I'm trying to create a condition statement for a function that will return the text and label for a passed list.
Here's the code:

def get_label(text: list):
    doc = nlp('. '.join(text) + '.')
    keywords = []
    for ent in doc.ents:
        keywords.append((ent.text, ent.label_))
    return keywords

Right now I'm passing in the list:
['Kaggle', 'Google', 'San Francisco', 'this week', 'as early as tomorrow', 'Kag-ingle', 'about half a million', 'Ben Hamner', '2010', 'Earlier this month', 'YouTube', 'Google Cloud Platform', 'Crunchbase', '$12.5 to $13 million', 'Index Ventures', 'SV Angel', 'Hal Varian', 'Khosla Ventures', 'Yuri Milner']

This is the output:
[('Google', 'ORG'), ('San Francisco', 'GPE'), ('this week', 'DATE'), ('as early as tomorrow', 'DATE'), ('Kag-ingle', 'PERSON'), ('about half a million', 'CARDINAL'), ('Ben Hamner', 'PERSON'), ('2010', 'DATE'), ('Earlier this month', 'DATE'), ('Google Cloud Platform', 'ORG'), ('Crunchbase', 'ORG'), ('$12.5 to $13 million', 'MONEY'), ('Index Ventures', 'ORG'), ('Hal Varian', 'PERSON'), ('Khosla Ventures', 'ORG'), ('Yuri Milner', 'PERSON')]

What I'm trying to get:
[('Kaggle', 'UNKNOWN'), ('Google', 'ORG'), ('San Francisco', 'GPE'), ('this week', 'DATE'), ('as early as tomorrow', 'DATE'), ('Kag-ingle', 'PERSON'), ('about half a million', 'CARDINAL'), ('Ben Hamner', 'PERSON'), ('2010', 'DATE'), ('Earlier this month', 'DATE'), ('YouTube', 'UNKNOWN'), ('Google Cloud Platform', 'ORG'), ('Crunchbase', 'ORG'), ('$12.5 to $13 million', 'MONEY'), ('Index Ventures', 'ORG'), ('Hal Varian', 'PERSON'), ('Khosla Ventures', 'ORG'), ('Yuri Milner', 'PERSON')]

I've tried using:

for token in doc.sents:
       keywords.append((token.text, token.label_))

Which returns:
[('Kaggle.', ''), ('Google.', ''), ('San Francisco.', ''), ('this week.', ''), ('as early as tomorrow.', ''), ('Kag-ingle.', ''), ('about half a million.', ''), ('Ben Hamner. 2010.', ''), ('Earlier this month.', ''), ('YouTube.', ''), ('Google Cloud Platform.', ''), ('Crunchbase.', ''), ('$12.5 to $13 million.', ''), ('Index Ventures.', ''), ('SV Angel.', ''), ('Hal Varian.', ''), ('Khosla Ventures.', ''), ('Yuri Milner.', '')]

This is (assuming) because there is a period at the end of each token preventing any label from returning.
If anyone has an idea of how I can fix this, I'd really appreciate the help.

Edit: Wanted to add some formatting to make it easier to read.

[vinbo8]

Here's a link to the question on Stack Overflow, where it has been answered.