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The fingerspelling provided here is most commonly used for proper names of people and places; it is also used in some languages for concepts for which no sign is available at that moment.
There are obviously specific signs for many words available in sign language that are more appropriate for daily usage.
Given your candidate set, you can generate ground-truth training data either using human judges or past user engagement.
As I mentioned above, the definition of synonyms is different for different applications, so if you are using human judges, you will need to come up with clear guidelines on what makes a good synonym for them to use.
But this does not astonish us when we understand the difficulties which he was obliged to solve.
He was trying to solve his problem and Tillie's, and what he had found was no solution, but a compromise.
I asked, astonished at Jim's behavior, and anxious for some clew by which to solve its mystery.
If you can solve the problems, will you send me the answers by the first post?