I want to write a function that takes in an arbitrary word and generates a sentence where the word has a high probability of appearing

Question

I want to write a function that takes in an arbitrary word and generates a sentence (or set of sentences) where the word has a high probability of appearing. For example,

>> generate_sentence("lawn")
>> ['Joe mowed the lawn', 'Nothing beats the smell of a freshly mown lawn', ...]

How do I approach this problem?

If I already have a set of candidate sentences, it is easy to order them according to the probability of my word appearing, by using a language model (e.g., GPT-2). However, I want to generate these sentences from the language model directly, while enforcing a minimum probability of my word as a constraint (e.g., minimum probability = 50%).